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1,881,831 | Go Programming Language Full Tutorial | I wrote a series of entries trying to serve as a guide to the Go programming language. This tutorial... | 0 | 2024-06-12T00:04:27 | https://coffeebytes.dev/en/pages/go-programming-language-tutorial/ | go, tutorial, devops, backend | ---
title: Go Programming Language Full Tutorial
published: true
date: 2024-06-12 20:10:45 UTC
tags: go,tutorial,golang,devops,backend
canonical_url: https://coffeebytes.dev/en/pages/go-programming-language-tutorial/
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/786a4o2w2ca48mxot6ar.jpg
---
I wrote a series of entries trying to serve as a guide to the Go programming language. This tutorial requires you to know at least the basis of programming, so it’s probably a good idea to read this only if you’re learning Go as your second or third programming language. This content goes from Go’s basic syntax to advances uses as signal catching or containerization.
## Go language introduction and Basic Syntax
Introduction to the Go programming language, native data types, variables, the controversy around this language, the good, the bad, the ugly and even a glimpse at its popular, and sometimes hated, mascot.
[Go, coding language, introduction to variables and data types](https://coffeebytes.dev/en/go-programming-language-introduction-to-variables-and-data-types/)
How to create go functions and pass arguments to them, along with the basis of the fmt package used to print text on the screen
[Go: functions, arguments and the fmt package](https://coffeebytes.dev/en/go-functions-arguments-and-the-fmt-package/)
Master the different type of loops that exist in go, learn how to use flow control to execute your code conditionally and learn about the break, continue and defer clauses.
[Go: loops for, break, continue, defer, if and else](https://coffeebytes.dev/en/go-cycles-or-loops-for-break-continue-defer-if-and-else/)
Create arrays and slices and know their differences and how to iterate over them correctly using range.
[Go: slices and arrays, basic characteristics and most common uses](https://coffeebytes.dev/en/go-slices-and-arrays-basic-characteristics-and-most-common-uses/)
Learn how do map or dictionaries work internally, the different ways to create them and how to iterate over them using range.
[Golang maps or dictionaries](https://coffeebytes.dev/en/golang-maps-or-dictionaries/)
Read about the main differences that exist between string, runes and bytes in go, how they work internally and their main related methods.
[Go: string runes and bytes explained](https://coffeebytes.dev/en/go-string-runes-and-bytes-explained/)
## Go Programming Language Tutorial: Object oriented programming
Go doesn’t have classes, but you can emulate OOP features (polimorfism, inheritance and encapsulation) using go structs.
[Go: Structs, inheritance, polymorphism and encapsulation](https://coffeebytes.dev/en/go-structs-inheritance-polymorphism-and-encapsulation/)
How to handle and import and reference packages and modules in go.
[Go: package import and module management](https://coffeebytes.dev/en/go-package-import-and-module-management/)
## Go Programming Language Tutorial: Concurrency and Corroutines
The feature that makes go stand out: concurrency and goroutines, learn how to create and handle them.
[Go: introduction to goroutines and concurrency](https://coffeebytes.dev/en/go-introduction-to-goroutines-and-concurrency/)
Here I explain you how to communicate goroutines through channels and the main principles to take care of when working with concurrent code.
[Go: use of channels to communicate goroutines](https://coffeebytes.dev/en/go-use-of-channels-to-communicate-goroutines/)
Understand the concept of deadlocks in the context of working with goroutines, how to avoid them and what causes this cumbersome problem.
[Go: channels, understanding the goroutines deadlocks](https://coffeebytes.dev/en/go-channels-understanding-the-goroutines-deadlocks/)
The basics of race conditions when working with concurrent code and how to prevent them. Create race condition resistant code using mutexes in Go
[Go: race conditions on goroutines and mutexes](https://coffeebytes.dev/en/go-race-conditions-on-goroutines-and-mutexes/)
## Go Programming Language Tutorial: Testing and Logging
The basis of go testing and coverage capabilities.
[Go: basic testing and coverage](https://coffeebytes.dev/en/go-basic-testing-and-coverage/)
How to profile and examine code performance using go.
[Go: profiling or basic profiling of CPU usage](https://coffeebytes.dev/en/go-profiling-or-basic-profiling-of-cpu-usage/)
How to use the default logging library in go programming language.
[Logging with the standard library in Go](https://coffeebytes.dev/en/logging-with-the-standard-library-in-go/)
## Go Applications
How to catch signals and process them in go to end your code execution in an elegant and safe way.
[Go: Handling Signals for Closing Applications](https://coffeebytes.dev/en/go-handling-signals-for-closing-applications/)
Learn how to handle SQL migrations using go’s migrate library
[Go Migration Tutorial with migrate](https://coffeebytes.dev/en/go-migration-tutorial-with-migrate/)
The basis of go’s reflection library and how to create flexible code that deals with unknown types
[Go with Reflect: Boost Your Code's Flexibility](https://coffeebytes.dev/en/go-with-reflect-discover-how-reflect-can-boost-your-programs-flexibility/)
Did you know that Docker is written in Go? Have you ever wondered how does a docker container works internally? Well I explain all the concepts that you need to know here in order to create your own containerization technology.
[How Does a Docker Container Work Internally?](https://coffeebytes.dev/en/how-does-a-docker-container-work-internally/)
I explain the worker pool design pattern in go and how to take advantage of Go’s concurrency and this design pattern to limit the amount of resources that your application uses.
[Worker Pool Design Pattern Explanation](https://coffeebytes.dev/en/worker-pool-design-pattern-explanation/) | zeedu_dev |
1,886,187 | 5 Captivating Linux Challenges to Boost Your Coding Skills 🖥️ | The article is about 5 captivating Linux challenges curated by LabEx, a renowned platform for hands-on programming exercises. These challenges cover a wide range of topics, from mastering wildcard usage in data analysis to uncovering hidden patterns in ancient texts, and even exploring interstellar network connectivity. Designed to ignite the passion of Linux enthusiasts, these exercises promise to push your coding skills to new heights, whether you're a seasoned pro or just starting your journey. With engaging narratives and opportunities to dive into practical applications, this collection offers a thrilling adventure through the world of open-source computing. Dive in and unlock your true Linux prowess! | 27,674 | 2024-06-12T20:09:50 | https://labex.io/tutorials/category/linux | linux, coding, programming, tutorial |
Are you ready to embark on a thrilling journey through the world of Linux? ✨ LabEx, a renowned platform for hands-on programming challenges, has curated a collection of five captivating exercises that will push your skills to new heights. From mastering wildcard usage in data analysis to uncovering hidden patterns in ancient texts, these challenges are designed to ignite your passion for Linux and propel you towards becoming a true coding connoisseur.
## 1. Wildcard Mastery in Data Analysis 🔍
As a data analyst in a futuristic tech lab, you'll be tasked with sorting and analyzing massive amounts of data generated by various experiments. Your mission? To efficiently filter specific files using Linux wildcard characters, streamlining the data analysis process. [Dive into this challenge now!](https://labex.io/labs/271446)
## 2. Rectangle Area Calculator Script 📏
Bash, the powerful shell used in Linux and Unix systems, provides a command-line interface for users to interact with the system. In this challenge, you'll explore the use of multi-line comments in Bash scripts, unlocking new levels of code organization and readability. [Embark on this scripting adventure!](https://labex.io/labs/211450)
## 3. Linux Quest: Pattern Seeking Saga 🔍
Welcome to the ancient Indian mythological world! Assume the role of a legendary Indian mythological sage seeking knowledge about pattern searching in the Linux environment. Your quest? To harness the power of the grep command and uncover hidden patterns, gaining insights into the secrets of the ancient texts. [Unravel the mysteries of this challenge!](https://labex.io/labs/271290)
## 4. Interstellar Network Connectivity Adventure 🌌
Step into the shoes of a space trader navigating through a war-torn galaxy. Your goal? To establish secure network connections to various interstellar markets using the Telnet protocol, trading goods and resources amidst the ongoing space warfare. [Embark on this intergalactic challenge!](https://labex.io/labs/271400)
## 5. Check Mounted File System Usage 💾
In this challenge, you'll write a script to determine whether a given file system or mount point is mounted. Using the df command, you'll check if the file system is mounted or not, and if it is, you'll print the free space available. If it's not mounted, you'll display an error message. [Dive into this file system exploration!](https://labex.io/labs/18275)
Get ready to unleash your Linux prowess and conquer these captivating challenges! 💪 Whether you're a seasoned Linux enthusiast or just starting your coding journey, these exercises will push the boundaries of your skills and ignite your passion for the world of open-source computing. 🚀 Dive in, and let the adventure begin!
---
## Want to learn more?
- 🚀 Practice thousands of programming labs on [LabEx](https://labex.io)
- 🌳 Learn the latest programming skills on [LabEx Skill Trees](https://labex.io/skilltrees/linux)
- 📖 Read more programming tutorials on [LabEx Tutorials](https://labex.io/tutorials/category/linux)
Join our [Discord](https://discord.gg/J6k3u69nU6) or tweet us [@WeAreLabEx](https://twitter.com/WeAreLabEx) ! 😄 | labby |
1,886,175 | Connect Logi ~ Logistics One Stop SaaS platform | Building a SaaS Platform for Logistics in stealth mode After completing my first freelance... | 0 | 2024-06-12T20:05:19 | https://dev.to/shrey802/connect-logi-logistics-one-stop-saas-platform-39jo | javascript, webdev, react, node | ### Building a SaaS Platform for Logistics in stealth mode
After completing my first freelance gig building an e-commerce store, I embarked on a new challenge: a paid internship at a logistics company specializing in international and national clients. My role? Developing the backend for their SaaS platform. Initially daunting, considering my unfamiliarity with logistics, I embraced the opportunity with both excitement and apprehension.
**!!I'm in the cover image!!**
Fast forward five months, and I've navigated through a dynamic learning curve. For the past four months, we've been diligently building in stealth mode. In such a complex project, where meticulous coding is paramount, I found myself rewriting the backend multiple times to refine system design and enhance dynamic functionality. Our tech stack includes Node.js with Express.js, React, and MySQL.
Here are some key backend features I've developed:
- **User Reporting**: Generate insightful reports with pie charts, filterable by date and time.
- **Organisation/Client Management**: Implement CRUD operations for managing multiple branches effortlessly.
- **Job Creation**: Streamline job imports with customized one-click job numbers.
- **Line of Business Management**: Tailor CRUD operations to different lines of business for enhanced flexibility.
- **Workflow Creation**: Design workflows based on business lines, incorporating manual or automatic dependencies.
- **Employee Access**: Facilitate seamless access to workflows and branches for multiple employees.
- **Approval System**: Implement multi-level approval processes for organizations and jobs, with configurable criteria.
- **Employee Management**: Ensure smooth operations with comprehensive CRUD functionalities for managing employees.
- **Scheduled Mailing**: Automate timely client updates for improved communication.
- **Branch Management**: Enable easy creation and management of multiple branches.
- **Job Management**: Efficiently create and manage jobs specific to each branch's requirements.
- **User Roles**: Assign and manage customized roles to employees for optimized workflow management.
- **Notification System**: Provide real-time alerts for organization and job updates to enhance operational efficiency.
- **Approval Alerts**: Notify all employees promptly upon organization or job approval for coordinated action.
- **Branch Switching**: Allow employees the flexibility to switch seamlessly between branches.
- **Secure Authentication**: Ensure robust security through encryption-based user authentication protocols.
This internship has been an invaluable learning experience, offering profound insights into backend development within the logistics industry. Beyond technical skills, it has provided a glimpse into the complexities of real-world applications and the satisfaction of contributing to impactful projects. As an undergraduate, it's also been a source of supplementary income, further enriching my journey into the world of software development.
Thank you! | shrey802 |
1,886,173 | Enhancing Recruitment Efficiency: The Role of Recruiting Software in Staffing Firms with Insights on Executive Search Software | In the dynamic and competitive landscape of modern recruitment, staffing firms play a critical role... | 0 | 2024-06-12T19:59:18 | https://dev.to/sana_tariq_c1a4185530b9f6/enhancing-recruitment-efficiency-the-role-of-recruiting-software-in-staffing-firms-with-insights-on-executive-search-software-275f | staffing, software, firms, webdev | In the dynamic and competitive landscape of modern recruitment, staffing firms play a critical role in connecting talented individuals with the right job opportunities. As the demand for efficient and effective hiring processes continues to grow, the adoption of recruiting software has become a necessity for staffing firms aiming to stay ahead. This article explores the essential features and benefits of [recruiting software for staffing firms](https://www.recruitbpm.com/staffing-firm-software) and provides insights into the specialized field of executive search software.
**The Importance of Recruiting Software in Staffing Firms**
Recruiting software serves as a comprehensive solution designed to streamline the entire recruitment process. From sourcing candidates to managing client relationships, these platforms offer a range of tools that enhance productivity and ensure a seamless hiring experience.
**Key Features of Recruiting Software**
**Applicant Tracking System (ATS):** An ATS is a core component of recruiting software. It allows recruiters to manage job applications efficiently by tracking candidates throughout the hiring process, from application to onboarding. This system facilitates easy sorting, filtering, and ranking of candidates based on predefined criteria.
**Resume Parsing:** This feature automates the extraction of relevant information from resumes, reducing the manual effort required to enter data into the system. Resume parsing enhances accuracy and speeds up the initial screening process.
**Candidate Relationship Management (CRM):** A CRM system helps maintain detailed profiles of candidates, including their skills, experiences, and preferences. This functionality is crucial for building strong relationships and keeping potential candidates engaged over time.
**Job Posting and Distribution:** Recruiting software enables firms to post job openings on multiple job boards and social media platforms simultaneously. This broadens the reach and attracts a diverse pool of candidates, increasing the chances of finding the perfect match.
**Automated Communication:** Automated emails and notifications keep candidates informed about their application status and upcoming interviews. This feature improves the candidate experience and allows recruiters to focus on more strategic tasks.
**Benefits of Recruiting Software**
**Increased Efficiency:** By automating repetitive tasks and streamlining workflows, [Staffing firm software](https://www.recruitbpm.com/staffing-firm-software) allows recruiters to focus on higher-value activities, such as interviewing and engaging with candidates.
**Better Candidate Matching:** Advanced algorithms and machine learning capabilities help match candidates to job openings more accurately, increasing the likelihood of successful placements.
**Enhanced Collaboration:** A centralized platform facilitates better collaboration among team members, ensuring everyone has access to the same candidate information and can work together more effectively.
**Improved Compliance:** Recruiting software often includes features to ensure compliance with labor laws and regulations, reducing the risk of legal issues.
**Data-Driven Decisions:** Analytics and reporting tools provide insights into recruitment metrics, helping firms identify areas for improvement and make data-driven decisions.
**Executive Search Software:** A Specialized Tool for High-Level Placements
While general recruiting software meets the needs of most staffing activities, [executive search software](https://www.recruitbpm.com/executive-search-software) is tailored specifically for high-level placements, such as C-suite executives and senior management roles. This software includes additional features designed to meet the unique requirements of executive search.
**Key Features of Executive Search Software**
**Advanced Search and Filtering:** Executive search software offers sophisticated search capabilities, allowing recruiters to find candidates with specific qualifications, experiences, and leadership qualities necessary for senior roles.
**Market Mapping and Talent Pooling:** This feature helps recruiters identify and map out potential candidates in the market, creating a talent pool of high-caliber professionals who might not be actively seeking new opportunities but could be ideal for executive positions.
**Confidentiality and Discretion:** High-level searches often require a greater degree of confidentiality. Executive search software includes features to manage sensitive information and ensure discreet communication.
**Client Relationship Management:** Building and maintaining strong relationships with clients is crucial in executive search. The software includes tools to manage client interactions, track engagement, and provide detailed progress reports.
**Assessment and Evaluation Tools:** Executive search software often includes tools for assessing candidates' leadership potential, cultural fit, and overall suitability for the role. These tools can include psychometric testing, 360-degree feedback, and detailed reference checks.
**Conclusion**
Recruiting software is an invaluable asset for staffing firms, providing essential tools and features that streamline the hiring process and improve candidate matching. For firms specializing in high-level placements, executive search software offers additional capabilities tailored to the unique demands of executive recruitment. By leveraging these advanced technologies, staffing firms can enhance their efficiency, make better hiring decisions, and ultimately achieve greater success in connecting top talent with the right [opportunities](https://dev.to/). | sana_tariq_c1a4185530b9f6 |
1,886,172 | My First Freelance Gig: Building an E-Commerce Store | In December 2023, I landed my first freelance gig, marking the first entry in the experience section... | 0 | 2024-06-12T19:51:13 | https://dev.to/shrey802/my-first-freelance-gig-building-an-e-commerce-store-3kp5 | webdev, javascript, freelance, design |
In December 2023, I landed my first freelance gig, marking the first entry in the experience section of my resume. It was with a small company that manufactures dairy and cosmetic products. The client was supportive and confident in my skills, making it an exciting opportunity. My task was to create an e-commerce store for selling their products, using React, Material UI, Node.js with Express.js, Firebase, and MySQL.
I implemented various features, including an order management system, an admin panel, order confirmation via email and WhatsApp, discounts, a product form, and authentication using JWT. Material UI significantly enhanced the user interface, allowing me to create a visually appealing and functional store. The project took nearly two months to complete, and I successfully delivered it, gaining valuable experience and a certificate in the process.
Working with a professional client for the first time taught me that "the client always wants more" is indeed true. Despite some moments of skepticism about freelancing, I found the experience rewarding and educational. However, I haven't taken on a second gig yet, as I secured a paid internship soon after. I'll be writing about that in my next blog.
Unfortunately, the repository for this project is private, but here are the key features I implemented:
- **Authentication with JWT**
- **Products Listing & Product Details**
- **Cart Management System**
- **Business Query Section**
- **Product Reviews**
- **Payment System under 2.5k Rs**
- **Order System with Email & WhatsApp API (Twilio)**
- **User Flow Changes**
- **Admin Form for Product Addition**
- **Discounts**
- **Subcategories, Search, and Category Filter**
- **Forgot Password Feature**
Thank you for reading! | shrey802 |
1,886,171 | What is a data breach? | An occurrence where personal, private, secret, or confidential information about an individual is... | 0 | 2024-06-12T19:47:41 | https://dev.to/isaacgato/what-is-a-data-breach-41h7 | cybersecurity, nordpass, security | An occurrence where personal, private, secret, or confidential information about an individual is disclosed without the user's consent or is stolen is known as a data breach.
Malware or hacking attacks are the main causes of data breaches. The following are other breach techniques that are commonly seen:
**Insider leak:** Data theft by a dependable person or an authority figure with access rights.
**Payment card fraud:** Physical skimming devices are used to steal payment card information.
Theft or loss of physical property includes files, laptops, office computers, portable drives, and other items.
**Unintentional disclosure:** Sensitive information may be made public due to errors or neglect.
**Unknown:** In a tiny percentage of instances, the precise breach mechanism is unclear or not disclosed.
With all of this, I know you are curious about how to determine whether your personal information has been compromised.
{% embed https://www.loom.com/share/bd00ea6813334c8b8f8c9db470e297dc?sid=97fff106-1004-4ccc-a928-46ead8f7ea9e %}
**1. Go to your browser and click on the address**
**2.Look up Nordpass.com on the internet.**
**3. Enter your information to register and log in.**
**4.click Data Breach Scanner in the tools section.**
**5.This is where you can configure your credit or debit card, email, or both.**
**6.After this, you can scan your information to see the outcomes. You will find out at this point whether or not any of your personal information has been compromised.**
**7.**In addition to having a password manager for all your passwords, [Nordpass.com](www.nordpass.com) can generate strong passwords that are hard for hackers to decipher. a sample of the password that you can obtain is this. **Y8m3BF5xpH%r5t7E3&$Ga&QduBfMr6UdsU9** | isaacgato |
1,886,169 | Item 34: Use enums em vez de constantes int | No uso de Constantes temos Prefixação para evitar conflitos: Prefixos como APPLE_ e ORANGE_ são... | 0 | 2024-06-12T19:42:26 | https://dev.to/giselecoder/item-34-use-enums-em-vez-de-constantes-int-mm5 | java, enums, development, javaefetivo | **No uso de Constantes temos**
**Prefixação para evitar conflitos:**
Prefixos como APPLE_ e ORANGE_ são usados porque Java não fornece namespaces para grupos de enum int, prevenindo conflitos quando duas enums têm constantes com nomes idênticos.
Veja como Enums é em sua forma mais simples:
**Instabilidade dos enum int:**
Os valores int das enums são compilados dentro dos clientes que os utilizam. Modificar esses valores requer recompilação dos clientes para evitar comportamentos errados.
**Limitações dos enum int e enum string:**
enum int: Difícil de traduzir para strings imprimíveis e iterar sobre suas constantes.
**enum string:**
Facilita a codificação direta de strings constantes, propensa a erros de digitação não detectados em tempo de compilação e problemas de desempenho devido à comparação de strings.
**Vantagens dos tipos enum do Java:**
São classes completas, mais poderosas que suas contrapartes em outras linguagens.
Garantem segurança de tipo em tempo de compilação.
Cada tipo enum tem seu próprio namespace, evitando conflitos de nomes idênticos.
Possibilidade de adicionar métodos, campos e implementar interfaces.
Constantes enum são finais e imutáveis.
**Exemplo de tipo enum:**
Enumeração de planetas com massa e raio como parâmetros.
Método surfaceWeight calcula o peso na superfície de cada planeta.
Utiliza método values para iterar sobre as constantes.
Impressão:
**Manutenção e evolução:**
Remover elementos de um tipo enum causa erros de compilação ou exceções úteis em tempo de execução.
Métodos privados ou package-private para comportamentos usados internamente.
**Enums aninhados e comportamentos específicos:**
- Enum PayrollDay usa um enum aninhado privado para calcular pagamento de horas extras.
- Evita comandos switch dentro de enums para implementar comportamentos específicos.
**Boas práticas:**
Use enums sempre que precisar de um conjunto de constantes conhecidas em tempo de compilação.
Considere métodos específicos para constantes ao invés de switch em enums para comportamentos distintos.
Enums são preferíveis às constantes int por serem mais legíveis, seguras e poderosas.
Em resumo, os tipos enum do Java são mais legíveis, seguros e versáteis que as alternativas baseadas em int ou string, com vantagens significativas em termos de manutenção e evolução de código. | giselecoder |
1,886,168 | Ansible: No python interpreters found for host | The error message "[WARNING]: No python interpreters found for host (tried ['python3.12',... | 0 | 2024-06-12T19:41:40 | https://dev.to/vidyasagarmsc/ansible-no-python-interpreters-found-for-host-4dpf | ansible, automation, python, shortposts |
The error message "[WARNING]: No python interpreters found for host (tried ['python3.12', 'python3.11', 'python3.10', 'python3.9', 'python3.8', 'python3.7', '/usr/bin/python3', 'python3'])" indicates that Ansible is unable to find a compatible Python interpreter on the remote hosts.
### Introduction
Ansible is a powerful automation tool that simplifies the process of managing and configuring remote systems. It relies on Python being installed on the target hosts to execute its modules and perform various tasks. However, in some cases, Ansible may encounter difficulties in locating a compatible Python interpreter, leading to the warning message you've encountered.
This warning typically occurs when Ansible is unable to find a Python interpreter that matches the expected version or location on the remote host(s). It's important to note that this warning does not necessarily prevent Ansible from running, but it may cause certain modules or tasks to fail or behave unexpectedly.
There are several potential reasons why Ansible might not be able to find a Python interpreter on the remote host(s):
1. **Python is not installed**: The remote host(s) may not have Python installed, or the installed version may not be in the expected location or path.
2. **Incompatible Python version**: Ansible may be looking for a specific Python version that is not available on the remote host(s).
3. **Permissions issues**: The Python interpreter may be present, but Ansible may not have the necessary permissions to execute it.
4. **Path issues**: The Python interpreter may be installed in a non-standard location that Ansible is not checking.
5. **Connectivity issues**: There may be connectivity problems between the Ansible control node and the remote host(s), preventing Ansible from properly detecting the Python interpreter.
To resolve this warning and ensure that Ansible can successfully execute tasks on the remote host(s), it's essential to investigate the root cause and take appropriate actions. This may involve installing or updating Python on the remote host(s), modifying Ansible's configuration to specify the correct Python interpreter path, or addressing any underlying connectivity or permission issues.
In the following sections, we'll explore various troubleshooting steps and potential solutions to help you resolve the "[WARNING]: No python interpreters found for host" error and ensure smooth Ansible operations.
## Solution 1: Reinstall Python or fix the existing Python version mismatch
1. Run the below command
```sh
ansible --version | grep "python version"
```
**output:**
```sh
python version = 3.10.5 (main, Jun 9 2022, 00:00:00) [GCC 12.1.1 20220507 (Red Hat 12.1.1-1)] (/usr/bin/python)
```
2. On a terminal, run the below command and compare the output with the above
```sh
python --version
# On a Linux machine
which python
```
3. If there is a mismatch, you can reinstall Python or fix the version of Python.
## Solution 2: the pip magic
1. On a terminal, run this command to reinstall ansible
```sh
pip3 install ansible
```
---
## Additional solutions:
Here are the potential solutions to resolve the "No python interpreters found" error in Ansible, without annotations:
- **Set the interpreter_python_fallback in ansible.cfg**
While not officially documented as a configurable option, some users have reported success by adding the interpreter_python_fallback setting to the ansible.cfg file. For example:
```ini
interpreter_python_fallback=/usr/bin/python3
```
This tells Ansible to use the specified Python interpreter as a fallback if it can't find a suitable one on the remote host.
- **Modify the system PATH on remote hosts**
If Python is installed in a non-standard location on the remote hosts, you can modify the system PATH to include the directory where Python is installed. This allows Ansible to find and use the Python interpreter.
- **Use the ansible_python_interpreter variable**
You can set the ansible_python_interpreter variable at the inventory, host, or task level to specify the path to the Python interpreter on the remote hosts. For example, in your inventory file:
```ini
[mygroup]
host1 ansible_python_interpreter=/usr/bin/python3
```
- **Use the kubernetes.core.k8s_exec module**
For Kubernetes environments, you can use the kubernetes.core.k8s_exec module to execute commands directly on pods, without requiring a Python interpreter. This module is useful when dealing with pods that don't have a Python environment.
- **Ensure Python is installed on remote hosts**
If Python is not installed on the remote hosts, you'll need to install it first. Ansible requires Python to be present on the managed nodes to execute its modules and tasks.
## Conclusion
By trying one or a combination of these solutions, you should be able to resolve the "No python interpreters found" error and successfully run Ansible on your remote hosts or Kubernetes pods.
## Further reading:
[Python 3 support](https://docs.ansible.com/ansible/latest/reference_appendices/python_3_support.html)
| vidyasagarmsc |
1,886,164 | Dates References: A Timely Affair | One notation to rule them all For some time now, I've been working on a Web App framework, and this... | 0 | 2024-06-12T19:35:15 | https://dev.to/cedricfrancoys/dates-references-a-timely-affair-2kmh | programming, softwareengineering, softwaredevelopment, codequality | **One notation to rule them all**
For some time now, I've been working on a [Web App framework](https://github.com/equalframework/equal), and this led me to think about a lot of things, amongst which data typing.
eQual provides a structured way to reference dates allowing to describe and retrieve any date based on the current date, which can be used in Domains for filtering or conditioning visibility.
Date References allow to reference dates relatively to various intervals and dynamically compute dates for a wide range of scenarios by combining methods and parameters.
A **Date Reference** descriptor is built using the following structure :
```
date.<origin>(<offset>).<interval>.<method>(<arguments>)
```
or, in a more explicit notation :
```
date.{this|prev|next}[(<offset>)].{day|week|month|quarter|semester|year}.{first|last|get(reference:index)}
```
### Attributes and Arguments
#### 1. Origin
| Method | Description | Offset | Possible Values |
|------------|------------------------------------------------------|--------|--------------------------|
| prev(n) | Previous period with an offset of n intervals | n > 0 | `prev`, `prev(n)` |
| next(n) | Next period with an offset of n intervals | n > 0 | `next`, `next(n)` |
| this() | Current period (n=0 by default) | n = 0 | `this`, `this(0)` |
#### 2. Interval
| Interval | Description |
|------------|--------------------|
| day | Day |
| week | Week |
| month | Month |
| quarter | Quarter |
| semester | Semester |
| year | Year |
#### 3. Method
| Method | Description |
|------------|--------------------------------------|
| first() | First day of the interval |
| last() | Last day of the interval |
| get() | Get a specific date with arguments |
### Tables of Possible Values
#### Origin
| Method | Possible Values |
|------------|------------------------------------|
| `prev(<increment>)` | `prev`, `prev(0)`, `prev(n)` (n ≥ 0) |
| `next(<increment>)` | `next`, `next(0)`, `next(n)` (n ≥ 0) |
| `this()` | `this`, `this(0)` |
#### Interval
| Interval | Description |
| ---------- | ----------- |
| `day` | Day |
| `week` | Week |
| `month` | Month |
| `quarter` | Quarter |
| `semester` | Semester |
| `year` | Year |
#### Method
Methods can be applied on the chosen interval (except for `day`, for which the method has no effect).
| Method | Description |
|------------|---------------------------------------|
| first() | First day of the interval |
| last() | Last day of the interval |
| get() | Get a specific date |
#### Arguments for the `get()` Method
| Argument | Concerned Interval | Possible Values |
|-----------------------------|-----------------------------------|-------------------------------------------------|
| day:<number> | month, quarter, semester, year | Month: `day:1` to `day:31`<br>Year: `day:1` to `day:365` |
| week:<number> | month, quarter, semester, year | `week:1` to `week:52` (or `week:53`) |
| <day_of_week>:first | month, quarter, semester, year | `monday:first` to `sunday:first` |
| <day_of_week>:last | month, quarter, semester, year | `monday:last` to `sunday:last` |
| <day_of_week>:<number> | month, quarter, semester, year | `monday:1` to `monday:5` (month)<br>`monday:1` to `monday:14` (quarter)<br>`monday:1` to `monday:26` (semester)<br>`monday:1` to `monday:52` (or `monday:53`) (year) |
### Usage Examples
* **today**
```
date.this.day
```
* **Seven days from now**
```
date.next(7).day
```
* **First day of the month 5 months before the current month:**
```
date.prev(5).month.first()
```
* **Last day of the quarter 2 quarters after the current quarter:**
```
date.next(2).quarter.last()
```
* **34th week of the next year:**
```
date.next(1).year.get(week:34)
```
* **First Monday of the semester 3 semesters before the current semester:**
```
date.prev(3).semester.get(monday:first)
```
* **Second Wednesday of the month 4 months after the current month:**
```
date.next(4).month.get(wednesday:2)
```
* **first day of current year:**
```
date.this.year.first
```
or
```
date.this.year.get(day:1)
```
| cedricfrancoys |
1,885,669 | A feature needs a strong reason to exist | We're working on a product with an amazing UI for managing projects. Think Trello but different 🙃 It... | 0 | 2024-06-12T19:33:22 | https://dev.to/seasonedcc/a-feature-needs-a-strong-reason-to-exist-3e77 | shapeup, agile, design, product | We're working on a product with an amazing UI for managing projects. Think Trello but different 🙃
It offers drag and drop, in-place editing, keyboard navigation, etc, all with [optimistic UI](https://javascript.plainenglish.io/what-is-optimistic-ui-656b9d6e187c). The code is well-written and fairly organized, but it is inherently complex.
Recently, we wanted to add a "select multiple tasks and drag them all together" functionality. Before jumping into the code, we did some [shaping](https://www.youtube.com/watch?v=h_8M23wVjXk) to devise a solution that would not conflict with all the other user interactions we have.
Then it was time to do a [spike](http://www.extremeprogramming.org/rules/spike.html) to understand how hard it would be to build it. Before I even started coding the prototype, I knew it would make our codebase much more complex. We already have a lot of state management for the drag and drop, in-place editing, and optimistic UI. Adding another layer of state on the same UI would make it exponentially harder to grasp.
There is nothing inherently wrong with adding complexity. If the benefits outweigh the costs by a good margin, we're all for it. The problem in this case is that there is not yet a strong reason for this feature to exist.
The idea came up when we realized we had some time on our hands and wanted to use it to build something. And we feel this feature will be very useful in some cases. But if we're being honest, we still don't know how much so.
There is no user feedback indicating they're losing time dragging multiple tasks one by one. We only have our own experience with the app and a hunch. Nothing wrong with that either. Many of the best features out there were based on hunches and zero user feedback.
Still, something felt off while spiking. It doesn't feel like this hunch is worth the added complexity at this point. Maybe as we [frame](https://www.feltpresence.com/framing/) the problem better, it will.
That's the beauty of a method like [Shape Up](https://basecamp.com/shapeup). It provides great checkpoints where we can decide whether to go ahead with a project or not.
If the stages of development (framing, shaping, building) were not that clear, we might have moved forward with this feature and ended up with a much more complex codebase without a strong reason for it. | danielweinmann |
1,855,330 | C# Passing by Value vs Passing by Reference | Have you ever wondered why changes inside a function sometimes affect your variables, and other... | 0 | 2024-06-12T19:23:21 | https://dev.to/mahm00dmahm00d/c-passing-by-value-vs-passing-by-reference-5140 | csharp, methods |
Have you ever wondered why changes inside a function sometimes affect your variables, and other times do not? offers two ways to pass data: by value (copy) or reference (pointer). This article breaks down the distinction between the two, and how each works. Let's learn to control our data flow and write rock-solid code!
## Understanding Value Types and Reference Types
The two main categories Of types are reference and value A value type variable holds an instance Of the type. A reference variable, on the other hand, contains a reference to an instance of the type. Value types are allocated on the stack and deallocated when the stack unwinds or their containing type gets deallocated. This contrasts reference types, which are allocated on the heap and garbage-collected. Value-type variables can be used as fields in reference-type objects. To dive into how .NET treats value and reference types check out [Choosing Between Class and Struct](https://learn.microsoft.com/en-us/dotnet/standard/design-guidelines/choosing-between-class-and-struct)
Value types are the built-in types in C# like `int`, `long`, `double`, etc., or user-defined types like `struct` types. on the other hand, reference types are like arrays, classes, and so on.
Let's define some value types variables:
```csharp
int discountRate = 50;
double productAPrice = 60;
```
Now let's define some reference type variables:
First, let's define our **Product** class to hold our ProductId, and Price.
```csharp
public class Product
{
public int ProductId { get; set; }
public int Price { get; set; }
}
```
Then let's use our class to create a new object from it like:
```csharp
var product = new Product
{
ProductId = 1,
Price = 60
};
```
## Passing by Value
By default, when we pass a parameter into our method we pass it by value, which means it copies the object value to our method. Therefore, any modifications in our method do not affect the original variable. This applies only to the built-in or struct types.
Let's update the price from our `UpdatePriceByPercent` method:
```csharp
UpdatePriceByPercent(productAPrice, discountRate);
public static void UpdatePriceByPercent(double price, int discountRate)
{
price = price - (price • discountRate) / 100;
}
```
After calling the method, nothing changed; the value `productAPrice` is still the same. Every parameter passed to this method has a copy of the original variable value.
So, we use another approach by defining the `CalculateDiscount` method:
```csharp
public double productANewPrice = CalculateDiscount(ProductAPrice, discountRate);
public static double CalculateDiscount(double price, int discountRate) {
return price - (price * discountRate) / 100;
}
```
In this approach, we defined a method that returns the new price after applying the discount, assigning this value to a new variable to use later in our program.
Here we passed the price and discount rate as individual parameters and got a new value to deal with. But what if we need to modify the original variable itself? To handle this scenario, we pass the price by reference.
## Passing by Reference
In general, passing by reference means you pass a reference that refers to an object. Therefore, we use the variable directly without creating any new copy. This technique is useful in many scenarios. This approach is straightforward in C#. The `ref` keyword allows us to access the data and make changes that persist.
### ref Keyword
Let's clear things out/ All objects we create from classes are reference-type variable that passed by reference by default, and all objects we create from a `struct` are value-type variables that passed by value by default.
Going back to our code, let's update the price within our `UpdatePriceByPercentByRef` method:
```csharp
UpdatePriceByPercentByRef(ref productAPrice, discountRate);
public static void UpdatePriceByPercentByRef(ref double price, int discountRate) {
price = price - (price * discountRate) / 100;
}
```
We defined `UpdatePriceByPercentByRef` method with two parameters. The first `double` prefixed with the `ref` keyword allows us to use it by reference. On the other hand, the second parameter, an `int`, is passed by value. When we call the method, we pass the `productAPrice` variable prefixed with the `ref` keyword (this is required or throws a compile error). After calling this method, the value of `productAPrice` is updated.
### out Keyword
Here, if `productAPrice` is not initialized before passing it as a `ref` parameter, we encounter an error. This is true because we are trying to use a reference to an uninitialized variable. But, we can use the `out` keyword to use the variable with no need to initialize it. Let's see how to do that:
```csharp
double price;
MakeItZero(out price);
public static void MakeItZero(out double price) {
price = 0;
}
```
Here, we assigned the unassigned variable `price` to zero.
### Arrays
Now, let's use an array of double prices to increase them by 10 percent each:
```csharp
double[] prices = { 30, 15, 21.5, 50 };
UpdatePrices(prices, 10);
public static void UpdatePrices(double[] prices, int rate) {
for (int i = 0; i < prices.Length; i++)
{
prices[i] = prices[i] + prices[i] * rate / 100;
}
}
```
We defined `UpdatePrices` method that takes an array of `double` and an `int`. It updates the values in the array by increasing or decreasing them based on the given rate. After this, we define prices as `double[]` and initialize with values. Then, we call the `UpdatePrices` method and pass the prices array to it. Note that the `ref` keyword is not required. Finally, all the values in the array increased by 10%.
### Classes and Objects
Let's create a method that takes a product and an int discount rate to update its price:
```csharp
public static void ApplyDiscount(Product product, int discountRate)
{
product.Price -= (product.Price * discountRate) / 100;
}
```
Here, there is no need to use the `ref` keyword and the price is updated after calling the method.
### ref readonly modifier
Then we have `ref readonly` which allows referencing a variable without permitting its value to be changed. The question arises: why use it?
We use it to indicate that a large `struct` should be passed by reference for reasons.
The ref modifier introduced in C# 12, offers a balance between and safety.
## Key Differences and Considerations
Passing by value is the default behavior for value-type and struct-type variables, and passing by reference is the default behavior for class-type variables or arrays.
We pass by reference when we need to modify the actual value or state, or when we want to gain more performance dealing with large struct-type variables. Being able to use the `ref readonly` modifier also avoids unnecessary copying and accesses the heap memory address more safely without allowing modifications.
## Conclusion
Passing by value means any modifications in the method body do not affect the original variable value.
Passing by reference means passing the original data location in memory. That means any modifications within the method affect the original variable value.
Built-in types and struct types in C# are passed by value by default. Passing by reference is the default behavior for arrays and classes.
When passing and array or an object to a method, the method gets a reference to the entire object in the memory
We use the `ref` keyword to pass variables by reference, and the `out` keyword to define a method that returns values by reference.
Consider data size and the need for modification. We use passing by value for small data and passing by reference for large object to improve performance and control the modifications.
Finally, passing by reference can introduce complexity. Use it judiciously, and always with proper data handling practices.
| mahm00dmahm00d |
1,886,152 | Expert Car Detailing Services in San Francisco | Tropicali Auto Spa | In the vibrant city of San Francisco, where every street corner exudes style and sophistication, your... | 0 | 2024-06-12T19:19:08 | https://dev.to/rakige9276/expert-car-detailing-services-in-san-francisco-tropicali-auto-spa-1ggc | cardetailing, carwash, car, waxing | In the vibrant city of [San Francisco](https://en.wikipedia.org/wiki/San_Francisco), where every street corner exudes style and sophistication, your car is not just a mode of transportation; it's an extension of your personality and a reflection of your lifestyle. Whether you're cruising down Lombard Street or exploring the scenic beauty of Golden Gate Park, one thing is for sure – your car deserves to look its absolute best. This is where the art of car detailing services comes into play, elevating your ride's appearance and performance to a new level.
Understanding the Essence of Car Detailing
Car detailing goes beyond the standard [car wash and wax routine](https://www.tropicaliautospa.com/). It's a meticulous process involving cleaning, restoring, and protecting your vehicle's exterior and interior surfaces. From removing dirt and grime to restoring the shine of your paintwork, every step is carefully executed to achieve showroom-quality results.
The Benefits of Professional Car Detailing Services
Enhanced Appearance: A professionally detailed car boasts a glossy finish that turns heads and grabs attention wherever you go. By removing surface imperfections and restoring the shine of your paint, detailing rejuvenates your car's appearance, making it look as good as new.
Protection Against the Elements: San Francisco's diverse weather conditions, from foggy mornings to sunny afternoons, can take a toll on your car's exterior. Car detailing services include the application of protective coatings such as wax or ceramic coatings, which act as a barrier against UV rays, rain, dirt, and pollutants, preserving your paintwork for years to come.
Improved Resale Value: Whether you're planning to upgrade to a new vehicle or sell your current one, a well-maintained car commands a higher resale value. Professional detailing not only enhances the aesthetics of your car but also demonstrates that you've taken excellent care of it, appealing to potential buyers and maximizing your return on investment.
Healthier Interior Environment: The interior of your car is prone to accumulating dust, allergens, and bacteria over time. A thorough interior detailing not only removes dirt and stains but also sanitizes surfaces, creating a healthier environment for you and your passengers to enjoy.
Choosing the Right Car Detailing Service in San Francisco
With a plethora of car detailing providers in the Bay Area, it's essential to choose a reputable and experienced company that delivers exceptional results. Here are some factors to consider when selecting a car detailing service:
Expertise and Experience: Look for a detailing provider with a team of skilled technicians who have extensive experience in the industry. They should possess the knowledge and expertise to handle various types of vehicles and address specific detailing needs.
Quality of Products and Equipment: The quality of detailing products and equipment used can significantly impact the outcome of the service. Opt for a detailing company that utilizes premium-grade products and state-of-the-art equipment to ensure superior results and long-lasting protection for your car.
Range of Services Offered: Choose a [detailing service](https://www.tropicaliautospa.com/) that offers a comprehensive range of services to meet your specific needs. Whether you require paint correction, ceramic coating, interior detailing, or specialty services such as engine bay cleaning or headlight restoration, make sure the provider can accommodate your requirements.
Customer Reviews and Testimonials: Take the time to read customer reviews and testimonials to gauge the reputation and reliability of the detailing service. Positive feedback and satisfied customers are indicators of a trustworthy and reputable company that prioritizes customer satisfaction.
Experience the Difference with Tropicali Mobile Auto Spa
At [Tropicali Mobile Auto Spa](https://www.tropicaliautospa.com/), we pride ourselves on being the premier destination for [car detailing services in San Francisco](https://maps.app.goo.gl/nnKxW3vo1KxxRnkn7). With years of experience and a passion for perfection, our team of skilled technicians is committed to delivering unparalleled results that exceed your expectations.
From our signature exterior detailing packages to our comprehensive interior cleaning services, we offer a wide range of solutions to enhance the beauty and longevity of your vehicle. Using cutting-edge techniques and premium-quality products, we tailor each detailing service to suit your car's unique needs, ensuring optimal results every time.
But what sets us apart is our commitment to convenience and customer satisfaction. With our mobile auto spa, we bring our top-notch detailing services directly to your doorstep, whether you're at home, at work, or enjoying a day out in the city. Say goodbye to long waits at traditional detailing shops and hello to a hassle-free and personalized experience with Tropicali Mobile Auto Spa.
So why settle for anything less than perfection when it comes to your car? Experience the difference with Tropicali Mobile Auto Spa and treat your ride to the luxury it deserves. Schedule an appointment today and let us transform your car into a true masterpiece on wheels. Your satisfaction is our guarantee, and your car will thank you.
In conclusion, car detailing services in San Francisco are not just a luxury but a necessity for car owners who value quality, performance, and style. Whether you're looking to enhance your car's appearance, protect its surfaces, or maintain its resale value, professional detailing services offer many benefits beyond aesthetics. So why wait? Give your car the attention it deserves and experience the transformative power of professional car detailing today. | rakige9276 |
1,886,146 | The next social networking and dating app for the LGBTQIA+ community | Purr is the next social networking and dating app for queer women, non-binary, and trans... | 0 | 2024-06-12T19:13:23 | https://dev.to/purradmin/the-next-social-networking-and-dating-app-for-the-lgbtqia-community-44em | dating, lgbtqia, networking | [Purr](https://www.purrdating.com/) is the next social networking and dating app for queer women, non-binary, and trans people.
The App will feature a comprehensive way for users to connect with each other based on proximity, interests, industry, and much more. The app will also bolster an optional face and ID verification process to provide users with an additional level of confidence. The app will be available in the United States in 2024 on both the Google Play and Apple App Stores. | purradmin |
1,886,144 | What is Cloud Cost Optimization? A Comprehensive Guide | Introduction to Cloud Cost Optimization Cloud cost optimization refers to the strategic approach of... | 0 | 2024-06-12T19:07:11 | https://dev.to/unicloud/what-is-cloud-cost-optimization-a-comprehensive-guide-2469 | cloud, optimization | **Introduction to Cloud Cost Optimization**
[Cloud cost optimization](https://unicloud.co/blog/cloud-cost-optimization/) refers to the strategic approach of managing and reducing cloud-related expenses while maximizing the value derived from cloud services. As businesses increasingly adopt cloud technologies, managing cloud costs effectively becomes crucial. Cloud cost optimization involves using various tools, strategies, and best practices to ensure that organizations only pay for what they need and avoid unnecessary expenditures.
**Importance of Cloud Cost Optimization**
Effective cloud cost optimization is essential for several reasons:
**1. Cost Control:** It helps organizations keep their cloud spending under control, preventing budget overruns and financial waste.
**2. Resource Efficiency:** By optimizing cloud costs, businesses can ensure that their resources are utilized efficiently, avoiding over-provisioning and underutilization.
**3. Scalability:** Optimized cloud costs enable organizations to scale their cloud resources up or down based on demand, ensuring they pay only for what they use.
**4. Competitive Advantage:** Cost-efficient cloud operations can provide a competitive edge by allowing businesses to allocate more resources to innovation and growth.
**Key Strategies for Cloud Cost Optimization**
Implementing effective cloud cost optimization requires a combination of strategies. Here are some key approaches:
**1. Right-Sizing Resources:** Continuously monitor and adjust the size of cloud resources to match workload requirements. Avoid over-provisioning by using tools to analyze and predict resource needs.
**2. Utilize Reserved Instances:** Purchase reserved instances for predictable workloads to benefit from significant cost savings compared to on-demand pricing.
**3. Implement Auto-Scaling:** Use auto-scaling features to automatically adjust resources based on demand, ensuring optimal resource utilization without manual intervention.
**4. Monitor and Analyze Usage:** Regularly monitor cloud usage and spending using cloud cost management tools. Analyze patterns to identify areas where costs can be reduced.
**5. Optimize Storage Costs:** Implement storage optimization techniques such as data tiering, compression, and deletion of unnecessary data to reduce storage expenses.
**6. Leverage Spot Instances:** Use spot instances for non-critical workloads to take advantage of lower pricing for spare cloud capacity.
**The Role of Cloud Migration in Cost Optimization**
Cloud migration plays a significant role in cloud cost optimization. Moving to the cloud offers opportunities to re-evaluate and optimize IT infrastructure. Here’s how cloud migration contributes to cost optimization:
**1. Assess and Plan:** Conduct a thorough assessment of existing workloads and infrastructure before migrating to the cloud. Identify which workloads are suitable for migration and develop a detailed migration plan.
**2. Re-Architect for the Cloud:** Redesign applications and workloads to leverage cloud-native features, improving performance and reducing costs.
**3. Choose the Right Migration Strategy:** Select the appropriate cloud migration strategy, such as lift-and-shift, re-platforming, or refactoring, based on the specific needs and goals of the organization.
**4. Monitor Post-Migration Costs:** After migration, continuously monitor cloud costs and usage to ensure that the anticipated cost savings are realized and to identify further optimization opportunities.
**Effective Cloud Cost Optimization Strategy**
Developing a robust cloud cost optimization strategy involves several critical steps. Here’s a guide to creating an effective strategy:
**1. Set Clear Goals:** Define clear objectives for cloud cost optimization, such as reducing overall cloud spending, improving resource utilization, or enhancing cost visibility.
**2. Establish Governance:** Implement governance policies to manage cloud spending, enforce cost controls, and ensure compliance with organizational standards.
**3. Use Cost Management Tools:** Leverage cloud cost management tools provided by cloud providers, such as AWS Cost Explorer, Azure Cost Management, and Google Cloud’s Cost Management, to gain insights into cloud spending.
**4. Implement Tagging:** Use tags to categorize and allocate cloud costs accurately across different departments, projects, or business units.
**5. Continuous Monitoring and Optimization:** Regularly review and optimize cloud costs using data-driven insights and automation tools. Implement continuous improvement practices to adapt to changing needs and technologies.
**6. Train and Educate Teams:** Provide training and resources to educate teams on cloud cost optimization practices, fostering a culture of cost-awareness and accountability.
**Benefits of Cloud Cost Optimization**
Effective [cloud cost optimization](https://unicloud.co/blog/cloud-cost-optimization/) offers numerous benefits, including:
**1. Reduced Expenses:** By optimizing cloud costs, organizations can significantly reduce their cloud spending and allocate resources more efficiently.
**2. Improved Financial Visibility:** Enhanced cost visibility allows businesses to track and manage cloud expenses more effectively, ensuring better financial control.
**3. Enhanced Performance:** Optimizing cloud resources improves performance and reliability, ensuring that workloads run efficiently without unnecessary delays or downtime.
**4. Increased Agility:** Cost optimization enables organizations to be more agile, scaling resources up or down based on demand and business needs.
**5. Competitive Advantage:** Lower cloud costs provide a competitive edge, allowing businesses to invest more in innovation and strategic initiatives.
**Conclusion**
[Cloud cost optimization](https://unicloud.co/blog/cloud-cost-optimization/) is a critical aspect of cloud financial management, ensuring that organizations derive maximum value from their cloud investments while minimizing unnecessary expenses. By implementing effective strategies, leveraging cloud migration opportunities, and continuously monitoring and optimizing cloud costs, businesses can achieve financial efficiency and operational excellence. Embrace cloud cost optimization to stay competitive and ensure sustainable growth in the cloud era.
| unicloud |
1,884,842 | Build a cloud native CI/CD workflow in 2 mins - yes, really! | CloudBees platform is your sandbox for innovation. We want to empower every developer to embark on... | 0 | 2024-06-12T19:01:53 | https://dev.to/cloudbees/build-a-cloud-native-cicd-workflow-in-2-mins-yes-really-1dab | devops, cloud, cicd, devsecopsmadeeasy | CloudBees platform is your sandbox for innovation.
We want to empower every developer to embark on something innovative as quickly as possible. Our testament to this obsession starts with how easy it is to create a truly cloud native CI/CD workflow with our platform - create and execute a build, scan, and deploy workflow within 2 minutes!
Here’s how.
## STEP 1- Set up your initial credentials
Start at [cloudbees.io](https://cloudbees.io/). You have multiple ways to sign up - ex: using your GitHub and Google accounts - to streamline the process. We’ll use the example of signing up via email here. Enter your email address and password. Verify your email following that.
## STEP 2 - Install your GitHub app
You’re now officially signed into your account! Choose your pathway: Run a sample workflow or CI insights for Jenkins. Choose the first path (‘Run a sample workflow’) for this scenario. Select GitHub as your provider. Install the GitHub app and connect the repository, which will form the basis for your workflow.
## STEP 3 - Create the component in the platform
You’re in! Name the component based on your loaded repository and click ‘Create Component.’
## STEP 4 - Explore the carousel on what you can do
You will see a workflow composer in a few seconds after clicking ‘Create Component.’ During this time, you can browse a carousel of what you can do with workflows and the platform.
## STEP 5 - Click ‘Create Sample Workflow’
Finally, click ‘Create Sample Workflow’ to land on the workflow composer. It includes a visual workflow orchestration tool that makes creating and managing complex software delivery pipelines easy.
Here, the platform detects a Java project and automatically updates it to reveal a Java template workflow.
And there you have it! A cloud native CI/CD workflow ready for your use. You can commit it or modify it any way you want.
---
## Platform Update: Fresh Look, New Features, and a Price Drop!
**Here’s a quick update on what we’ve been working on lately:**
- Released Feature Management 1.0 for the major progressive delivery use cases
- Added new usability and insight [upgrades](https://www.cloudbees.com/blog/feature-update-compare-metrics-sub-orgs-components) for our popular [analytics reports](https://www.cloudbees.com/blog/introduction-to-cloudbees-platform-analytics-reports)
- Streamlined the journey to your first workflow with immediate insights
And that’s just the beginning! With all these cool enhancements, **we're also slashing our Team pricing big time – from $100/month to just $30/month**.
**What do you get when you upgrade from the Free version?**
- 8,000 additional workflow execution minutes
- Unlimited sub-organizations
- 12 months log retention
- Essentials Support
Enjoy the features you love and get even more for what you pay.
## [TRY](https://cloudbees.io/) the CloudBess platform today ✅
| cloudbees_ |
1,886,135 | Test Post | Hello World | 0 | 2024-06-12T18:53:16 | https://dev.to/nhelchitnis/test-post-4pig | Hello World | nhelchitnis | |
1,886,133 | Building React Apps with the Nx Standalone Setup | Hello, fellow developers! Today, let's explore how to set up and optimize a standalone React... | 0 | 2024-06-12T18:51:40 | https://dev.to/ak_23/building-react-apps-with-the-nx-standalone-setup-171m |
Hello, fellow developers! Today, let's explore how to set up and optimize a standalone React application using Nx. This tutorial is perfect for those who want the benefits of Nx without the complexity of a monorepo setup.
### What You Will Learn
- Creating a new React application with Nx
- Running tasks (serving, building, testing) individually or in parallel
- Using code generators to scaffold components
- Modularizing your codebase for better maintainability
### Getting Started
To begin, we need to create a new Nx workspace with a standalone React application. Follow these steps:
#### Step 1: Create a New React App
Run the following command to create a new Nx workspace and a standalone React application:
```bash
npx create-nx-workspace@latest myreactapp --preset=react-standalone
```
During the setup, choose your preferences:
- Bundler: Vite
- Test runner: Cypress
- Stylesheet format: CSS
- CI setup: GitHub
This command generates a workspace with the following structure:
```
myreactapp
├── e2e
├── public
├── src
│ ├── app
│ │ ├── app.module.css
│ │ ├── app.spec.tsx
│ │ ├── app.tsx
│ │ └── nx-welcome.tsx
│ ├── assets
│ ├── main.tsx
│ └── styles.css
├── index.html
├── nx.json
├── package.json
├── project.json
├── tsconfig.app.json
├── tsconfig.json
├── tsconfig.spec.json
└── vite.config.ts
```
### Serving the App
To serve your new React application, you can use the Nx CLI or npm scripts:
```bash
npm start
# or
nx serve
```
Your application will be available at [http://localhost:4200](http://localhost:4200).
### Running Tasks
Nx identifies tasks from configuration files, `package.json` scripts, and `project.json`. To view these tasks, run:
```bash
nx show project myreactapp --web
```
You can run tasks using the following commands:
- Build the app: `nx build`
- Run tests: `nx test`
- Lint the code: `nx lint`
- Run end-to-end tests: `nx e2e`
To run multiple tasks in parallel, use:
```bash
nx run-many -t test lint e2e
```
### Caching
Nx caches task results to improve performance. If you run tasks again, Nx will use the cached results if no changes were made.
### Creating New Components
Nx plugins come with code generators. To generate a new component, use:
```bash
npx nx g @nx/react:component hello-world --directory=src/app/hello-world --dry-run
```
Remove the `--dry-run` flag to apply the changes. The generator will create:
```
src/app/hello-world/hello-world.module.css
src/app/hello-world/hello-world.spec.tsx
src/app/hello-world/hello-world.tsx
```
### Modularizing Your Codebase
For better maintainability, split your app into local libraries. Generate libraries using:
```bash
nx g @nx/react:library products --unitTestRunner=vitest --bundler=none --directory=modules/products
nx g @nx/react:library orders --unitTestRunner=vitest --bundler=none --directory=modules/orders
nx g @nx/react:library ui --unitTestRunner=vitest --bundler=none --directory=modules/shared/ui
```
This will create a structured directory with independent libraries.
### Importing Libraries
Use the libraries in your app by updating the `tsconfig.base.json` with library paths:
```json
{
"compilerOptions": {
...
"paths": {
"@myreactapp/orders": ["modules/orders/src/index.ts"],
"@myreactapp/products": ["modules/products/src/index.ts"],
"@myreactapp/ui": ["modules/shared/ui/src/index.ts"]
},
...
}
}
```
Import and use the libraries in your application components.
### Setting Up CI
Generate a CI workflow for GitHub:
```bash
npx nx generate ci-workflow --ci=github
```
This command creates a `.github/workflows/ci.yml` file to run lint, test, build, and e2e tasks.
### Connecting to Nx Cloud
To connect your workspace to Nx Cloud for remote caching and task distribution, run:
```bash
npx nx connect
```
Follow the instructions to connect your repository to Nx Cloud.
### Conclusion
Nx provides powerful tools to enhance your React development workflow, even in a standalone setup. By leveraging its capabilities, you can build, test, and maintain your applications more efficiently.
By continuously optimizing our development practices, we can evolve into better developers and build more efficient applications.
Ref: [nx.dev](https://nx.dev/getting-started/tutorials/react-standalone-tutorial) | ak_23 | |
1,884,891 | Creating and Deploying a Windows 11 Virtual Machine on Microsoft Azure | Azure virtual machines (VMs) can be created through the Azure portal. This method provides a... | 0 | 2024-06-12T18:46:55 | https://dev.to/tracyee_/creating-and-deploying-a-windows-11-virtual-machine-on-microsoft-azure-2kn3 | virtualmachine, cloudcomputing, microsoft, azure | Azure virtual machines (VMs) can be created through the Azure portal. This method provides a browser-based user interface to create VMs and their associated resources. This blog post shows you how to use the Azure portal to deploy a virtual machine (VM) in Azure that runs Windows 11 pro server. To see your VM in action, you can download the RDP file and open on your physical computer.
If you don't have an Azure subscription, create a [free account](https://azure.microsoft.com/en-us/free/?WT.mc_id=A261C142F) before you begin.
**Sign in to Azure**
Sign in to the [Azure portal](https://azure.microsoft.com/en-us/get-started/azure-portal).
**Create virtual machine**
- Enter virtual machines in the search.
- Under Services, select Virtual machines.
- Subscription: Choose the appropriate subscription.
- Resource Group: Create a new or select an existing resource group.-_Tracy_
- Virtual machine name: Give your VM a unique name -_MyAzureVM_.
- Region: Choose the data center region of your choice, preferably a region closest to you.
- Availability options: Select the availability preferences.
- Choose Windows 11 Pro, version 22H2 - x64 Gen2 (free services eligible) for the Image.
**Setting Up Authentication and Security**
- Under Administrator account, provide a username, such as _TracyChinedu_ and a password. The password must be at least 12 characters long and meet the defined complexity requirements.
- Under Inbound port rules, choose Allow selected ports and then select RDP (3389)
- Select confirmation of licensing.
**Configuring Disks and Storage**
- Under “Disks,” choose the OS disk type (Standard HDD, Standard SSD, Premium SSD).
- Adjust the OS disk size according to your needs.
**Network Configuration**
- Choose an existing virtual network and subnet or create new ones.
- Assign a public IP address if needed.
- Configure network security groups to control traffic.
**Management**
This helps to manage roles and acces, for this project we are leaving it as default.
**Monitoring**
Enable with managed storage account
**Tags**
Tagging in Azure enables you to label your resources in a logical manner, including individual resources, resource groups, and subscriptions.For this project,we are leaving as default.
**Review + Create**
- Review all your configuration settings to ensure accuracy.
- Validate that your selections align with your intended VM setup.
**Deploying the Virtual Machine**
- Click the “Create” button to initiate the VM creation process.
- Azure will begin provisioning your virtual machine based on your configuration.
**Deployment Complete**
- Click on _Connect_
**Download RDP file**
- Click on download RDP file
- Open file,it will prompt a box
- Click conect, enter the admin username and password of the VM.
**Virtual machine is ready**
Virtual machines can run programs and operating systems, store data, connect to networks, and do other computing functions just like the physical computer.
**Clean Up**
After creating and deploying the Vm, since this project is just for practice.We clean up by deleting the resource group to avoid incurring cost.
- Search for resource group
- Select _Tracy_ the resource group that was created for this VM
- Select all resources that were created
- Click delete
- Enter resource group name to confirm deletion
**Conclusion**
In this guide, I’ve taken you through the step-by-step process of creating a virtual machine in Microsoft Azure. By now, you should have a clear understanding of the various configuration options and settings involved. Virtual machines provide an incredibly flexible way to deploy and manage your applications in the cloud.
| tracyee_ |
1,886,129 | Hi | I feel big society learn your knowledge | 0 | 2024-06-12T18:45:04 | https://dev.to/yogi_raj_6c57fca5540802fe/hi-12n3 | I feel big society learn your knowledge | yogi_raj_6c57fca5540802fe | |
1,881,944 | A Comprehensive Guide to Keycloak Configuration for Web Development! | Hey folks! If you're diving into the world of web development, you've probably come across the need... | 0 | 2024-06-12T18:44:00 | https://dev.to/ak_23/a-comprehensive-guide-to-keycloak-configuration-for-web-development-4jp | learning, webdev, beginners | Hey folks! If you're diving into the world of web development, you've probably come across the need for a robust identity and access management solution. Enter Keycloak—a powerful open-source tool that simplifies the complexities of authentication and authorization in modern applications. In this post, we'll walk you through a detailed Keycloak configuration tailored for web development, complete with practical tips and personal anecdotes. Let's get started!
### What is Keycloak?
Keycloak is an open-source identity and access management solution developed by Red Hat. It provides single sign-on (SSO), user federation, identity brokering, and social login capabilities. It's a go-to choice for many developers due to its flexibility and ease of use.
### Setting Up Keycloak
#### 1. Installation
First things first, let's get Keycloak installed. You can either use the standalone server or Docker. Personally, I prefer using Docker for its simplicity and ease of management.
**Using Docker:**
```bash
docker run -p 8080:8080 -e KEYCLOAK_USER=admin -e KEYCLOAK_PASSWORD=admin jboss/keycloak
```
This command will start Keycloak on port 8080 with `admin` as the username and password. Make sure to change these credentials in a production environment!
#### 2. Initial Configuration
Once Keycloak is up and running, navigate to `http://localhost:8080/auth` and log in using the admin credentials.
**Creating a Realm:**
- Click on the "Add Realm" button.
- Enter a name for your realm (e.g., "my-app-realm").
- Click "Create".
**Creating a Client:**
- Go to the "Clients" section.
- Click on "Create".
- Enter a client ID (e.g., "my-app-client").
- Select "OpenID Connect" as the client protocol.
- Click "Save".
**Client Configuration:**
- Set the "Access Type" to "public" for public clients or "confidential" for server-side applications.
- Enter valid redirect URIs (e.g., `http://localhost:3000/*` for a React app running locally).
- Save the changes.
### Integrating Keycloak with Your Application
#### 1. Setting Up Keycloak in a React Application
**Installing Dependencies:**
```bash
npm install keycloak-js
```
**Configuring Keycloak:**
Create a `keycloak.js` file in your project:
```javascript
import Keycloak from 'keycloak-js';
const keycloakConfig = {
url: 'http://localhost:8080/auth',
realm: 'my-app-realm',
clientId: 'my-app-client',
};
const keycloak = new Keycloak(keycloakConfig);
export default keycloak;
```
**Initializing Keycloak:**
In your `index.js` or main component file:
```javascript
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import keycloak from './keycloak';
keycloak.init({ onLoad: 'login-required' }).then((authenticated) => {
if (authenticated) {
ReactDOM.render(<App />, document.getElementById('root'));
} else {
console.warn('User not authenticated');
}
}).catch((error) => {
console.error('Keycloak initialization failed:', error);
});
```
### Tips
From my personal experience, integrating Keycloak can be a bit daunting at first, but the benefits far outweigh the initial setup challenges. Here are a few tips to smoothen your journey:
- **Start Simple:** Begin with a basic configuration and gradually add complexity as needed. This helps in isolating and troubleshooting issues effectively.
- **Leverage Community Support:** The Keycloak community is vibrant and helpful. Don’t hesitate to ask questions on forums or GitHub.
- **Security Best Practices:** Always follow security best practices, such as using HTTPS in production and keeping your Keycloak server updated.
### Summary and Call-to-Action
Keycloak is a powerful tool that can significantly enhance the security and user management of your web applications. By following the steps outlined in this guide, you can set up and integrate Keycloak with ease. Give it a try and share your experiences. If you have any questions or run into issues, drop a comment below!
---
"Security is not a product, but a process." - Bruce Schneier
Feel free to share your Keycloak stories and any tips you might have learned along the way. Happy coding! | ak_23 |
1,886,126 | How to Send Bulk Emails For Free using SMTP (Beginner's Guide) | In today's digital age, email remains one of the most powerful and cost-effective channels for... | 0 | 2024-06-12T18:37:35 | https://blog.learnhub.africa/2024/06/12/how-to-send-bulk-emails-for-free-using-smtp-beginners-guide/ | smtp, email, webdev, beginners | In today's digital age, email remains one of the most powerful and cost-effective channels for communication and marketing. Whether you're a small business owner, a blogger, or a hobbyist, the ability to send bulk emails can be a game-changer.
However, many email service providers (ESPs) charge hefty fees for their services, making it difficult for those on a tight budget to leverage this essential tool. Fortunately, there's a solution: SMTP (Simple Mail Transfer Protocol) servers. In this beginner's guide, we'll explore how to send bulk emails without paying using SMTP.
Before we discuss sending bulk emails using SMTP, let's first understand what SMTP is. SMTP is a standard communication protocol for transmitting electronic mail (email) across the Internet. It acts as the backbone of email delivery, facilitating the transfer of messages from the sender's email client or server to the recipient's email server.
Everything you need to know about SMTP in this [SMTP: Everything You Must Know](https://blog.learnhub.africa/2024/02/04/smtp-everything-you-must-know/)
## Meaning of SMTP?
SMTP (Simple Mail Transfer Protocol) is the standard protocol for sending emails over the Internet. It governs how email data is formatted, transmitted, and authenticated between servers and clients to ensure proper delivery to recipients' inboxes.
There are both paid and free SMTP servers available. Free options include SMTP servers from email providers like Gmail and Outlook, but these often limit the number of emails you can send, especially for automated or bulk emails.
To bypass these limitations and ensure high deliverability for bulk emails, it's recommended to use a reputable SMTP service provider. Many top SMTP companies offer generous free plans suitable for most websites and applications' needs.
[**1. SendLayer**](https://sendlayer.com/)
[SendLayer](https://sendlayer.com/) is one of the most reliable email delivery platforms, trusted by customers in over 150+ countries. It's our #1 recommended SMTP mailer service for its ease of use, powerful features, and affordability.
SendLayer integrates seamlessly with WP Mail SMTP for WordPress, WooCommerce, BigCommerce, Magento, Drupal, HelpScout, and more. Its SMTP relay reliably sends transactional emails, confirmations, notifications, password resets, and more.
[Preventing Email Spoofing Attacks on your SMTP Server](https://blog.learnhub.africa/2024/02/20/preventing-email-spoofing-attacks-on-your-smtp-server/) learn how to prevent email spoofing with this guide.
Key features include detailed email logs, open/click tracking, spam protection, subdomain routing for reputation management, email list management, and excellent support.
**Pricing:** Free trial to send 200 emails. Paid plans start at $5/month for 1,000 emails with advanced features like suppression management and webhooks.
[**2. SMTP.com**](https://www.wpbeginner.com/refer/smtp-com/)
[SMTP.com](https://www.wpbeginner.com/refer/smtp-com/): Trusted SMTP Service for Businesses Worldwide SMTP.com is a leading SMTP service provider trusted by over 100,000 businesses worldwide. They offer a robust API for sending transactional emails and seamlessly integrate with WordPress through the popular WP Mail SMTP plugin.
With email relay at the core of their business, SMTP.com delivers exceptional deliverability, even for high email volumes. Their platform provides comprehensive reports on sends, views, bounce rates, clicks, and more, enabling you to monitor and optimize your email campaigns effectively.
Leveraging SMTP.com's domain reputation management features, WordPress site owners can ensure their emails consistently land in recipients' inboxes. This powerful solution can send automated site notifications, registration and authentication emails, WooCommerce order confirmations, status updates, and more.
**Pricing:** SMTP.com offers a 30-day free trial, allowing you to send up to 50,000 emails. Their paid plans start from $25 per month, and you can upgrade to higher plans for dedicated IP addresses and the Reputation Defender add-on.
[**3. Brevo (Formerly Sendinblue)**](https://www.wpbeginner.com/refer/brevo/)
[Brevo](https://www.wpbeginner.com/refer/brevo/), (Formerly Sendinblue): Powerful SMTP Solution for Beginners Brevo, formerly known as Sendinblue, is one of the best SMTP email service providers, particularly well-suited for beginners. They offer a comprehensive marketing platform that includes transactional emails, email marketing, SMS marketing, and more.
Seamless Integration with Popular Platforms Bravo integrates seamlessly with WordPress and various third-party platforms, such as OptinMonster, Salesforce, Google Analytics, and many others. This versatility allows for streamlined email communication across various systems and tools.
Robust Features for Effective Marketing Campaigns Besides its powerful SMTP capabilities, Brevo offers advanced features to enhance your marketing efforts. These include personalization and marketing automation tools, a drag-and-drop email editor, pre-designed marketing email templates, and live chat for real-time support.
Reliable Email Delivery with Extensible API and SMTP Relay At its core, Brevo provides a highly extensible email API and SMTP relay service, ensuring reliable and improved delivery of transactional emails.
Check out this article on [Setting Up SMTP Relay for Enhanced Email Reliability](https://blog.learnhub.africa/2024/02/22/setting-up-smtp-relay-for-enhanced-email-reliability/)
**Pricing:** Brevo offers a forever free plan that allows you to send up to 300 emails daily, making it an ideal starting point for beginners. Their paid plans start at $25 per month, including 20,000 emails per month, with no daily email-sending limits.
With its user-friendly platform, robust features, and affordable pricing, Brevo is an excellent choice for beginners seeking a reliable SMTP solution to power their email communication and marketing efforts.
[**4. Mailgun**](https://www.mailgun.com/)
[Mailgun](https://www.mailgun.com/) : Powerful SMTP Service for Developers and Businesses Mailgun is a popular SMTP service provider tailored for developers and businesses. They offer robust APIs for sending transactional emails, bulk emails, and more, making it an ideal choice for those with technical expertise.
Easy Integration with WordPress Mailgun seamlessly integrates with WordPress, allowing businesses, e-commerce stores, membership websites, and small enterprises to easily scale their SMTP service for sending marketing and transactional emails.
Developer-Focused Features While Mailgun's developer-centric approach may lack some beginner-friendly features in other SMTP providers, it excels in providing a powerful and flexible solution for those with coding skills.
**Pricing:** Mailgun offers a 'pay as you go' plan with the first 5,000 emails free for the first month, providing an opportunity to test the service. Their paid plans are competitively priced in the market. However, one dedicated IP costs $80 per month for improved deliverability and a dedicated IP address.
[**5. SendGrid**](https://sendgrid.com/)
[SendGrid](https://sendgrid.com/) is a powerful cloud-based SMTP email service provider that allows you to send mass emails without managing an SMTP server. It offers higher scalability with a powerful set of features.
Their SMTP relay is easy to set up and works with any WordPress site. It includes email address validation, delivery optimization tools, email analytics, email templates with a simple email editor, and integrations with third-party apps and services.
If deliverability is your main concern, SendGrid offers great tools to improve email delivery, including dedicated IP addresses and domain name authentication.
**Pricing:** They offer a free plan with 100 emails per day. Paid plans start at $19.95 per month.
[**6. Amazon SES**](https://aws.amazon.com/ses/)
[AWS](https://aws.amazon.com/ses/), Amazon SES: Cloud-Based SMTP Solution from the Industry Leader Amazon Web Services (AWS), the industry leader in cloud computing infrastructure, offers Amazon Simple Email Service (SES) as a powerful cloud-based SMTP service for marketers and developers.
Designed for Seamless Email Campaigns, Amazon SES enables users to easily send marketing, notification, and transactional email campaigns with high deliverability rates and cost-efficiency, leveraging the power of AWS.
Robust Features for Advanced Users and Developers While Amazon SES offers many robust features, it is primarily geared towards advanced users and developers, making it a suitable choice for those with technical expertise.
Easy WordPress Integration Amazon SES can be seamlessly integrated into your WordPress site using compatible plugins, allowing you to leverage its capabilities for your website's email communication needs.
Cost-Effective Email Sending Depending on your usage, Amazon SES can be one of the most cost-effective SMTP services on the market, particularly if your website is hosted on AWS.
**Pricing:** If your website is hosted on AWS, you can utilize their free tier to send up to 62,000 emails monthly. For other websites, pricing starts at $0.10 for every 1,000 emails sent, offering a cost-effective solution for businesses with varying email volume requirements.
With its cloud-based architecture, scalability, and integration with the AWS ecosystem, Amazon SES is an excellent choice for businesses and developers seeking a reliable and cost-effective SMTP solution from a trusted industry leader.
There isn’t a more cost-efficient SMTP solution for large sites than Amazon.
## Why Use SMTP for Bulk Email Sending?
There are several compelling reasons why SMTP is an excellent choice for sending bulk emails without paying:
1. Cost-effective: SMTP servers can be self-hosted or utilized through free services, eliminating the need for costly ESP subscriptions.
2. Control and customization: With SMTP, you have complete control over the email-sending process, allowing for greater customization and flexibility.
3. No sending limits: Unlike many ESPs imposing strict sending limits, SMTP offers unlimited email-sending capabilities.
4. Enhanced deliverability: You can improve your email deliverability rates by properly configuring SMTP servers and following best practices.
## Setting Up an SMTP Server
You'll need to set up an SMTP server to send bulk emails using SMTP. There are two main options: self-hosting or using a free SMTP service.
[SMTP.js – Send Email without a Server from the Browser](https://blog.learnhub.africa/2023/10/30/smtp-js-send-email-without-a-server-from-the-browser/)
Option 1: **Self-Hosting an SMTP Server**
Self-hosting an SMTP server involves installing and configuring email server software on your server or computer. This option provides maximum control and customization but requires technical expertise and ongoing maintenance. Popular self-hosted SMTP server solutions include:
- Postfix
- Sendmail
- Microsoft Exchange Server
- Exim
Setting up a self-hosted SMTP server is beyond the scope of this beginner's guide. However, numerous online resources and tutorials are available to guide you through the process.
Option 2: **Using a Free SMTP Service**
For beginners, using a free SMTP service is often the more accessible and convenient option. These services provide ready-to-use SMTP servers without the hassle of setting up and maintaining your infrastructure. Some popular free SMTP services include:
- Brevo (Free plan with up to 300 emails per day)
- Mailgun (Free plan with up to 10,000 emails per month)
- Amazon SES (Free tier with up to 62,000 emails per month)
- SendGrid (Free plan with up to 100 emails per day)
To get started with a free SMTP service, you'll typically need to create an account, obtain SMTP credentials (username and password), and configure your email client or application to use the provided SMTP server settings.
## Configuring Your Email Client or Application
Once you've set up an SMTP server or acquired credentials from a free SMTP service, you'll need to configure your email client or application to use the SMTP server for sending emails. The exact steps may vary depending on the software you're using, but generally, you'll need to provide the following information:
- SMTP server address (e.g., smtp.example.com)
- SMTP port number (commonly 25, 587, or 465)
- SMTP username and password (if required)
- Authentication method (e.g., plain, login, or NTLM)
- TLS/SSL encryption settings (secure connections)
Most email clients and applications have a dedicated section for configuring SMTP settings. Consult your software's documentation or search online for specific guides on setting up SMTP for your email client or application.
## Best Practices for Sending Bulk Emails Using SMTP
While SMTP provides a cost-effective way to send bulk emails, it's crucial to follow best practices to ensure optimal deliverability and avoid being labeled as spam. Here are some essential tips:
1. Obtain explicit permission: Always ensure that you have explicit permission from recipients to send them emails. Unsolicited bulk emails are considered spam and can lead to blacklisting and legal consequences.
2. Warm up your IP address: If you're using a new IP address for sending emails, gradually increase your sending volume over time to establish a positive reputation with email service providers.
3. Authenticate your domain: Configure SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) records to authenticate your domain and improve email deliverability.
4. Maintain a clean mailing list: Regularly remove invalid or inactive email addresses from your mailing list to maintain a high-quality list and improve delivery rates.
5. Monitor email metrics: Track and analyze email metrics such as open rates, click-through rates, and bounce rates to identify areas for improvement and optimize your email campaigns.
6. Comply with anti-spam laws: Familiarize yourself with anti-spam laws and regulations, such as CAN-SPAM Act (United States) and GDPR (European Union), to ensure compliance and avoid legal penalties.
7. Segment your mailing list: Segment your mailing list based on interests, demographics, or behavior to send more targeted and relevant emails, improving engagement and reducing unsubscribe rates.
8. Include an unsubscribe option: Always provide a clear and straightforward way for recipients to unsubscribe from your mailing list to maintain a positive sender reputation.
9. Monitor your reputation: Regularly check your email sender reputation with services like SenderScore or Barracuda Reputation to identify and address potential issues.
10. Consider email deliverability tools: Use tools like GlockApps to monitor and improve your email delivery rates, ensuring your messages reach their intended recipients.
By following these best practices, you can effectively leverage SMTP for sending bulk emails without paying while maintaining a positive sender reputation and ensuring optimal deliverability.
## Conclusion
Sending bulk emails without paying can be a game-changer for small businesses, bloggers, and hobbyists on a tight budget.
You can bypass costly ESP subscriptions and enjoy virtually unlimited email-sending capabilities by leveraging SMTP servers, either self-hosted or through free SMTP services.
However, following best practices is crucial, such as obtaining explicit permission, warming up your IP address, authenticating your domain, and complying with anti-spam laws to ensure optimal deliverability and maintain a positive sender reputation. With the right approach and tools, SMTP can be a powerful and cost-effective solution for your bulk email needs.
| scofieldidehen |
1,886,125 | HIRE A GENUINE USDT RECOVERY ~ARGONIX HACK TECH | In the evolution of internet fraud, safeguarding your Bitcoin accounts is paramount to protect your... | 0 | 2024-06-12T18:36:37 | https://dev.to/helmiemilia163/hire-a-genuine-usdt-recovery-argonix-hack-tech-1ch8 | In the evolution of internet fraud, safeguarding your Bitcoin accounts is paramount to protect your valuable digital assets from falling prey to phishing attacks and other malicious schemes. While no security system is foolproof, maintaining vigilance and implementing robust security measures can significantly mitigate the risk of becoming a victim. However, in the unfortunate event of falling victim to such fraud, professional assistance becomes imperative. This is where ARGONIX HACK TECH emerges as a beacon of trust and reliability, offering a dependable solution for those seeking to recover stolen Bitcoin funds.The reality of internet fraud underscores the importance of remaining vigilant at all times. Phishing attacks, in particular, pose a significant threat to unsuspecting individuals, often luring them into divulging sensitive information or accessing fraudulent websites. https://argonixhacktech.com By staying informed and adopting stringent security protocols, individuals can fortify their defenses against such malicious attempts.Despite these precautions, the possibility of falling victim to a phishing attack remains ever-present. In such dire circumstances, the need for professional assistance cannot be overstated. ARGONIX HACK TECH not only understands the intricacies of Bitcoin recovery but also guarantees the safety and security of their clients' funds. Their unwavering commitment to excellence ensures that every client receives the utmost care and attention, guiding them through the recovery process with expertise and precision.Recovering stolen Bitcoin funds without professional assistance is not only challenging but often futile. Victims may find themselves grappling with the complexities of tracing stolen funds, navigating legal intricacies, and confronting cybercriminals. Without the necessary expertise and resources, the odds of successful recovery diminish significantly.ARGONIX HACK TECH fills this void by offering specialized knowledge, resources, and connections tailored to the unique needs of each client. Their team of experts possesses the skills and experience necessary to navigate the intricacies of Bitcoin recovery, providing clients with a lifeline in their time of need.engaging professional recovery services like ARGONIX HACK TECH not only increases the likelihood of successful recovery but also streamlines the process, saving valuable time and resources. By entrusting their Bitcoin recovery to seasoned professionals, clients can rest assured that every effort will be made to reclaim what is rightfully theirs.ARGONIX HACK TECH stands as a trusted ally in the fight against internet fraud, offering a reliable solution for those seeking to recover stolen Bitcoin funds. Their unwavering dedication to their clients' well-being, coupled with their unparalleled expertise in Bitcoin recovery, sets them apart as a leader in the field. For anyone facing the daunting prospect of recovering stolen Bitcoin funds, seeking professional assistance from ARGONIX HACK TECH is not just advisable – it's essential for a successful outcome.
email: Argonixhacktech@ job4u.com
whatsApp: + 1 2 0 6 2 3 4 9 9 0 7 | helmiemilia163 | |
1,884,551 | Introducing Our First Computer Science Challenge! | In celebration of Pride Month, we are excited to introduce our first Computer Science Challenge in... | 0 | 2024-06-12T18:36:15 | https://dev.to/devteam/introducing-our-first-computer-science-challenge-hp2 | devchallenge, cschallenge, computerscience | In celebration of Pride Month, we are excited to introduce our first [Computer Science Challenge](https://dev.to/challenges/cs) in honor of Alan Turing, the brilliant gay English mathematician and crypto-analyst who is widely considered to be the “Father of Computer Science.” His birthday would have been on June 22, right in the middle of our challenge! So let’s celebrate.
For this challenge, there is only one simple writing prompt and one winner. Our winner will receive an exclusive DEV badge of honor and a gift from the [DEV Shop](https://shop.forem.com). Participants with a valid submission will receive a completion badge.
## Our Prompt
We are bringing back the **One Byte Explainer**!
Your challenge is to **explain a computer science concept in 256 characters or less.**
You can pick any concept (i.e. “Big O Notation, “Recursion” “P vs NP Problem”) and explain concisely what it is and why it’s relevant. You have 256 characters — less than a tweet — to get your point across, so the challenge is keeping it simple.
256 characters is ludicrously few for some of these concepts, that’s what makes it a challenge!
_**Would you rather be coding, with a chance to win cash prizes?** Then check out the [Twilio Challenge](https://dev.to/devteam/join-us-for-the-twilio-challenge-5000-in-prizes-4fdi) with a $5,000 prize pool!_
{% card %}
## How To Participate
In order to participate in the Computer Science Challenge, you will need to publish a post using the following submission template:
{% cta https://dev.to/new?prefill=---%0Atitle%3A%20%0Apublished%3A%20%0Atags%3A%20devchallenge%2C%20cschallenge%2C%20computerscience%2C%20beginners%0A---%0A%0A*This%20is%20a%20submission%20for%20%5BDEV%20Computer%20Science%20Challenge%20v24.06.12%3A%20One%20Byte%20Explainer%5D(https%3A%2F%2Fdev.to%2Fchallenges%2Fcs).*%0A%0A%23%23%20Explainer%0A%0A%3C!--%20Explain%20a%20computer%20science%20concept%20in%20256%20characters%20or%20less.%20--%3E%0A%0A%23%23%20Additional%20Context%0A%0A%3C!--%20Please%20share%20any%20additional%20context%20you%20think%20the%20judges%20should%20take%20into%20consideration%20as%20it%20relates%20to%20your%20One%20Byte%20Explainer.%20--%3E%0A%0A%3C!--%20Team%20Submissions%3A%20Please%20pick%20one%20member%20to%20publish%20the%20submission%20and%20credit%20teammates%20by%20listing%20their%20DEV%20usernames%20directly%20in%20the%20body%20of%20the%20post.%20--%3E%0A%0A%3C!--%20Don%27t%20forget%20to%20add%20a%20cover%20image%20to%20your%20post%20(if%20you%20want).%20--%3E%0A%0A%3C!--%20Thanks%20for%20participating!%20--%3E %}
One Byte Explainer Submission Template
{% endcta %}
{% endcard %}
Please review our [judging criteria, rules, guidelines, and FAQ page](https://dev.to/challenges/cs) before submitting so you understand our participation guidelines and [official contests rules](https://dev.to/page/cs-challenge-v24-06-12-contest-rules) such eligibility requirements.
## Important Dates
- June 12: Computer Science Challenge begins!
- <mark>June 23: Submissions due at 11:59 PM PDT</mark>
- June 25: Winner Announced
## "Father of Computer Science"
Interested in learning more about Alan Turing? Check out these posts to learn about his accomplishments and contributions to Computer Science:
{% embed https://dev.to/devteam/celebrating-dev-pride-alan-turing-52eh %}
{% embed https://dev.to/devteam/dev-pride-alan-turing-the-father-of-modern-computing-39in %}
{% embed https://dev.to/devteam/happy-110th-birthday-alan-turing-3m6o %}
{% embed https://dev.to/devteam/happy-111th-birthday-alan-turing-5271 %}
We hope you enjoy this writing challenge! Have questions? Ask them below.
Good luck and happy coding!
| thepracticaldev |
1,886,124 | Deploy Docker Image to AWS EC2 in 5 minutes | From Development to Staging in 5 Minutes… Introduction As we know, there are many ways to... | 0 | 2024-06-12T18:35:05 | https://srebreni3.medium.com/deploy-docker-image-to-aws-ec2-in-5-minutes-4cd7518feacc | aws, ec2, docker, containers | From Development to Staging in 5 Minutes…
Introduction
------------
As we know, there are many ways to run your Docker image on the Cloud. I have previously written about this and introduced two methods: **“How to Deploy a Docker Image to Amazon ECR and Run It on Amazon EC2”** & **“How to Deploy a Docker Image on AWS and Run it on Fargate”.**
The first method involves managing the infrastructure, security patches, network security, etc., while the second method allows AWS to handle the infrastructure, simplifying many processes for us. **However,** **I will write about this in future articles.**
In this article, I will show you the easiest way to move your Docker image from the **Development** to the **Staging** environment. This process takes approximately **5 minutes**. We will use **Docker** on our local machine, **DockerHub** and **AWS**.
Prerequisites
-------------
1. Create [AWS Account](https://aws.amazon.com/resources/create-account/). I already have an AWS Account and I won’t be creating a new one.
2. Create a [DockerHub](https://hub.docker.com/signup) account I already have and I won’t be creating a new one.
3. Create a [GitHub Account](https://docs.github.com/en/get-started/quickstart/creating-an-account-on-github) I already have GitHub and I won’t be creating a new one.
4. Download [Visual Studio Code](https://code.visualstudio.com/download) or another code editor.
5. Download and install [Docker.](https://www.docker.com/products/docker-desktop/)
Clone the Application to your Local machine
-------------------------------------------
To make it easier, we will use my [**simple-node-app**](https://github.com/srebreni3/simple-nodejs-app), which you need to clone to your local machine.
Go to your terminal and follow these steps:
```bash
git clone https://github.com/srebreni3/simple-nodejs-app
```
Then navigate to the project directory.
Go to your code editor, and you will see this:
We have **app.js, package.json,** and **Dockerfile**, it’s all we need.
I don’t want to explain the code of the application again, go to this [**article**](https://aws.plainenglish.io/how-to-deploy-docker-image-to-ecr-and-run-it-on-ec2-49523d39cc57) and you will find everything about it.
> Let’s summarize: **If you follow these steps, you will have an application on your Local machine, and that Local machine will be your Development environment. Feel free to change the code if you want.**
Push the Docker image to Docker Hub
-----------------------------------
We need to create a Docker image for our application. Navigate to the directory where the application is located. **If you are using an M1 or newer chip, use the following command to create the Docker image:**
```bash
docker buildx build --platform linux/amd64 -t node-app .
```
**If you are not using M1 or newer**, use this command to create a Docker image:
```bash
docker build -t node-app.
```
**When you have successfully created a Docker image, our next step is to push that image on Docker Hub.**
**Go to Docker Hub and create a new repository.**
**Let’s summarize: With these steps, you can push your Docker image to Docker Hub. It’s preferable to push it to the Private repository rather than the Public repository.**
**Create an EC2 Instance and install Docker on it**
**Go to the EC2 dashboard in AWS Console and click the Launch instance button.**
**2\. Name your instance, for example: node-docker-server. The image should be Amazon Linux 2023. If you want a free tier-eligible instance, choose t2.micro.**
**3\. We would like to login to the instance, and we will create a key pair. Security group should have open inbound ports 22 and 3000.**
**4\. For storage, I will leave default settings, I don’t need more than 8 GiB of storage. Don’t forget: Free tier eligible customers can get up to 30 GB of EBS General Purpose (SSD) or Magnetic storage.**
**5\. Under Configure Storage, click the Advanced details.**
Go to the bottom of the page, and you will see the User data window. Paste this code into User data:
```bash
#!/bin/bash
sudo yum install docker -y
sudo systemctl start docker
sudo systemctl enable docker
```
From the right side, click the **Launch instance** button.
> Let’s summarize: **With these steps, you can create an EC2 instance on AWS to set up your staging environment using User data to install Docker on the instance.**
Deploy an image from Docker Hub to AWS EC2
------------------------------------------
The first step is to connect to the EC2 instance. I will use AWS Console this time, but you can also connect through your Local machine from the terminal. Check out my older articles and you will find how to connect through a terminal from a Local machine.
Switch to sudo mode with this command:
```bash
sudo su
```
Check the Docker with:
```bash
docker --version
```
Everything is set up, the next step is to deploy the image from Docker Hub. Use this command:
```bash
docker run -d -p 3000:3000 <docker-hub-repo-name>
```
The image has been successfully created. Check the Public IP of your Instance with a 3000 port.
**We got our Docker application on the EC2 instance.**
> Let’s summarize: **Thanks to AWS, we can create a server and deploy whatever we want to that server in just a few seconds. This is an example of deploying from Docker Hub to staging environment (EC2 instance) in a few seconds.**
Conclusion
----------
If you prefer to run your production on EC2 instead of ECS using Docker images, one of the easiest ways to transfer images from the Development environment to the Staging environment is by using this method. Although this method has its advantages and disadvantages, it is, in my opinion, the simplest way so far. I hope it proves useful to someone.
| srebreni3 |
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1,886,118 | PowerInfer-2: Fast Large Language Model Inference on a Smartphone | PowerInfer-2: Fast Large Language Model Inference on a Smartphone | 0 | 2024-06-12T18:28:51 | https://aimodels.fyi/papers/arxiv/powerinfer-2-fast-large-language-model-inference | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [PowerInfer-2: Fast Large Language Model Inference on a Smartphone](https://aimodels.fyi/papers/arxiv/powerinfer-2-fast-large-language-model-inference). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- Introduces a new approach called PowerInfer-2 for fast inference of large language models on smartphones
- Focuses on improving the efficiency and performance of running large language models on mobile devices
- Explores techniques to reduce the computational and memory requirements of inference, enabling real-time applications on smartphones
## Plain English Explanation
PowerInfer-2 is a new method that allows large language models to run efficiently on smartphones. Large language models are powerful AI systems that can understand and generate human-like text, but they typically require a lot of computing power and memory to run. This can make it challenging to use them on mobile devices like phones, which have more limited resources.
The researchers behind PowerInfer-2 have developed techniques to reduce the computational and memory demands of running these large language models. This allows them to be used in real-time applications on smartphones, opening up new possibilities for mobile AI assistants, text generation, and other language-based tasks.
Some of the key ideas behind PowerInfer-2 include [tokenwise influential training data retrieval](https://aimodels.fyi/papers/arxiv/token-wise-influential-training-data-retrieval-large) to prioritize the most important parts of the model, and [efficient intercept support](https://aimodels.fyi/papers/arxiv/infercept-efficient-intercept-support-augmented-large-language) to speed up the inference process. The researchers also explore [techniques to enhance inference efficiency](https://aimodels.fyi/papers/arxiv/enhancing-inference-efficiency-large-language-models-investigating) and build on prior work in [transformer-based model compression](https://aimodels.fyi/papers/arxiv/transformer-lite-high-efficiency-deployment-large-language) and [efficient inference of large language models](https://aimodels.fyi/papers/arxiv/survey-efficient-inference-large-language-models).
## Technical Explanation
The researchers introduce PowerInfer-2, a new approach for fast inference of large language models on smartphones. They focus on reducing the computational and memory requirements of running these models, which is crucial for enabling real-time applications on mobile devices.
One key technique used in PowerInfer-2 is [tokenwise influential training data retrieval](https://aimodels.fyi/papers/arxiv/token-wise-influential-training-data-retrieval-large). This method identifies the most important parts of the language model and prioritizes them during inference, allowing for more efficient use of the limited resources available on smartphones.
The researchers also employ [efficient intercept support](https://aimodels.fyi/papers/arxiv/infercept-efficient-intercept-support-augmented-large-language), which accelerates the inference process by optimizing the way the model computes the final output. This builds on previous work in [enhancing inference efficiency of large language models](https://aimodels.fyi/papers/arxiv/enhancing-inference-efficiency-large-language-models-investigating).
Additionally, PowerInfer-2 incorporates [transformer-based model compression techniques](https://aimodels.fyi/papers/arxiv/transformer-lite-high-efficiency-deployment-large-language) to further reduce the memory and compute requirements, drawing on the broader research landscape of [efficient inference for large language models](https://aimodels.fyi/papers/arxiv/survey-efficient-inference-large-language-models).
## Critical Analysis
The paper provides a comprehensive overview of the techniques used in PowerInfer-2 and presents experimental results demonstrating the method's efficiency and performance on smartphones. However, the authors acknowledge that there are still some limitations to address.
For instance, the researchers note that the current implementation of PowerInfer-2 may not be suitable for all types of language models or tasks. They suggest that further research is needed to explore the generalizability of the approach and its applicability to a wider range of models and use cases.
Additionally, the authors highlight the importance of considering the trade-offs between inference speed, model accuracy, and other relevant metrics when deploying large language models on mobile devices. They encourage readers to think critically about these factors and their potential implications for real-world applications.
## Conclusion
PowerInfer-2 represents a significant advancement in the field of efficient inference for large language models on mobile devices. By incorporating techniques like tokenwise influential training data retrieval, efficient intercept support, and transformer-based model compression, the researchers have demonstrated a path forward for running powerful AI systems on smartphones in real-time.
The potential impact of this work is far-reaching, as it could enable a wide range of innovative applications that leverage the capabilities of large language models while overcoming the resource constraints of mobile platforms. As the field of efficient AI inference continues to evolve, PowerInfer-2 serves as an important contribution, highlighting the importance of optimizing model performance for deployment on resource-constrained devices.
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1,886,117 | Towards a Personal Health Large Language Model | Towards a Personal Health Large Language Model | 0 | 2024-06-12T18:28:16 | https://aimodels.fyi/papers/arxiv/towards-personal-health-large-language-model | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [Towards a Personal Health Large Language Model](https://aimodels.fyi/papers/arxiv/towards-personal-health-large-language-model). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- The paper explores the development of a "Personal Health Large Language Model" (PHLM), which aims to leverage large language models for personalized health prediction and analysis.
- The researchers focus on creating a comprehensive dataset of personal health information, including medical records, wearable device data, and self-reported health data.
- The paper discusses the potential applications of such a model in areas like [transforming wearable data into health insights](https://aimodels.fyi/papers/arxiv/transforming-wearable-data-into-health-insights-using), [evaluating large language models for public health classification](https://aimodels.fyi/papers/arxiv/evaluating-large-language-models-public-health-classification), and [recognizing mental health conditions using large language models](https://aimodels.fyi/papers/arxiv/large-language-model-mental-health-systematic-review).
## Plain English Explanation
The researchers in this paper are working on creating a special kind of artificial intelligence (AI) model called a "Personal Health Large Language Model" (PHLM). This model is designed to help with personalizing health predictions and analysis for individuals.
The key idea is to gather a lot of data about a person's health, including their medical records, information from their wearable devices (like fitness trackers), and self-reported health data. By feeding all this information into the PHLM, the researchers hope to create a model that can understand each person's unique health situation and make personalized recommendations or predictions.
For example, the PHLM could potentially [transform the data from a person's wearable device](https://aimodels.fyi/papers/arxiv/transforming-wearable-data-into-health-insights-using) into useful health insights. It could also be used to [evaluate how well large language models perform at classifying public health information](https://aimodels.fyi/papers/arxiv/evaluating-large-language-models-public-health-classification) or [recognize mental health conditions](https://aimodels.fyi/papers/arxiv/large-language-model-mental-health-systematic-review) based on a person's language and behavior.
The overall goal is to create a powerful AI tool that can help people better understand and manage their health in a personalized way.
## Technical Explanation
The researchers in this paper are working on developing a "Personal Health Large Language Model" (PHLM), which is a type of artificial intelligence (AI) system that can be used for personalized health prediction and analysis.
The key focus of the paper is on creating a comprehensive dataset of personal health information that can be used to train the PHLM. This dataset includes medical records, data from wearable devices (like fitness trackers), and self-reported health data. By gathering this diverse set of data for individual users, the researchers aim to create a model that can understand each person's unique health situation in great detail.
The potential applications of the PHLM discussed in the paper include:
1. [Transforming wearable data into health insights](https://aimodels.fyi/papers/arxiv/transforming-wearable-data-into-health-insights-using): The PHLM could be used to analyze data from a person's wearable devices and generate personalized health insights and recommendations.
2. [Evaluating large language models for public health classification](https://aimodels.fyi/papers/arxiv/evaluating-large-language-models-public-health-classification): The researchers propose using the PHLM to assess how well large language models can be applied to tasks related to public health, such as identifying health-related information in text.
3. [Recognizing mental health conditions using large language models](https://aimodels.fyi/papers/arxiv/large-language-model-mental-health-systematic-review): The PHLM could potentially be used to detect signs of mental health issues based on a person's language and behavior patterns.
Overall, the paper presents an ambitious vision for leveraging large language models and personalized health data to create a powerful tool for improving individual and public health outcomes.
## Critical Analysis
The paper presents a compelling vision for the development of a "Personal Health Large Language Model" (PHLM), but there are several important considerations and potential limitations that are not fully addressed.
One key concern is the privacy and ethical implications of gathering such a comprehensive dataset of personal health information. The researchers acknowledge the need for strong privacy protections, but more details on their approach to data security and consent would be helpful.
Additionally, the paper does not delve into the potential biases and fairness issues that could arise when training a large language model on health data. There is a risk that the PHLM could perpetuate or even amplify existing disparities in healthcare access and outcomes, particularly for underserved or marginalized populations.
Further research is also needed to understand the clinical validity and real-world efficacy of the PHLM's predictions and recommendations. The paper does not provide extensive evidence of the model's accuracy or its ability to improve health outcomes when deployed in practice.
Finally, the ambitious scope of the PHLM project raises questions about the feasibility and resource requirements for its development. The researchers may need to carefully prioritize and phase their goals to ensure the project remains viable and impactful.
Overall, the paper presents an interesting and potentially transformative vision for the use of large language models in healthcare, but more work is needed to address the key challenges and limitations identified.
## Conclusion
The "Personal Health Large Language Model" (PHLM) proposed in this paper represents a promising approach to leveraging the power of large language models for personalized health prediction and analysis. By creating a comprehensive dataset of personal health information, the researchers aim to develop an AI system that can deeply understand an individual's unique health situation and provide tailored insights and recommendations.
The potential applications of the PHLM are wide-ranging, from [transforming wearable device data into actionable health insights](https://aimodels.fyi/papers/arxiv/transforming-wearable-data-into-health-insights-using) to [evaluating the use of large language models for public health classification tasks](https://aimodels.fyi/papers/arxiv/evaluating-large-language-models-public-health-classification) and even [recognizing mental health conditions](https://aimodels.fyi/papers/arxiv/large-language-model-mental-health-systematic-review). If successful, the PHLM could revolutionize how individuals and healthcare providers approach personalized health management.
However, the paper also highlights several critical challenges and limitations that will need to be addressed, such as privacy concerns, potential biases, and the feasibility of the project's ambitious scope. Careful consideration of these issues will be crucial as the researchers continue to develop and refine the PHLM concept.
Overall, this paper presents an exciting and forward-thinking vision for the future of healthcare, one in which AI-powered tools like the PHLM can empower individuals to take a more active and informed role in managing their own well-being.
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1,886,116 | The best FREE hosting control panel & alternative to CPanel: CyberPanel! | If you are looking to host a website, whether that be built with React or WordPress, you need a few... | 0 | 2024-06-12T18:28:14 | https://dev.to/prismlabsdev/the-best-free-hosting-control-panel-alternative-to-cpanel-cyberpanel-2eie | hosting, wordpress, cpanel, cyberpanel | If you are looking to host a website, whether that be built with React or WordPress, you need a few things: mainly a domain and a server to host your website on and point your domain to.
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Overall I have not found any other FREE control panel that has been as easy to work with as CyberPanel and met all of my needs! I would highly recommend CyberPanel to anyone who is looking to host their own control panel. | jwoodrow99 |
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1,886,114 | Where's the DEV discord server? | Hello everyone. On brief question. Where can I find the DEV discord server? Thanks! | 0 | 2024-06-12T18:27:44 | https://dev.to/softwaredeveloping/wheres-the-dev-discord-server-2o13 | help, discord, forem | Hello everyone. On brief question. Where can I find the DEV discord server? Thanks! | softwaredeveloping |
1,886,113 | Clifford-Steerable Convolutional Neural Networks | Clifford-Steerable Convolutional Neural Networks | 0 | 2024-06-12T18:27:41 | https://aimodels.fyi/papers/arxiv/clifford-steerable-convolutional-neural-networks | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [Clifford-Steerable Convolutional Neural Networks](https://aimodels.fyi/papers/arxiv/clifford-steerable-convolutional-neural-networks). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- This paper introduces a novel type of convolutional neural network called Clifford-Steerable Convolutional Neural Networks (CS-CNNs) that can efficiently learn and operate on [Clifford algebra](https://aimodels.fyi/papers/arxiv/theory-equivariant-quantum-neural-networks) representations of data.
- CS-CNNs leverage the [steerable convolution](https://aimodels.fyi/papers/arxiv/leveraging-so3-steerable-convolutions-pose-robust-semantic) property to achieve equivariance to transformations in the Clifford group, enabling the network to better capture and represent the underlying symmetries in the data.
- The authors demonstrate the effectiveness of CS-CNNs on various tasks, including image classification and image generation, and show that they outperform standard CNNs and other state-of-the-art architectures.
## Plain English Explanation
Clifford-Steerable Convolutional Neural Networks (CS-CNNs) are a new type of neural network that can work with a special kind of mathematical structure called Clifford algebra. This allows them to better understand and represent the underlying patterns and symmetries in data, such as images.
Normally, standard convolutional neural networks (CNNs) are limited in their ability to learn and operate on certain types of data transformations, like rotations and reflections. CS-CNNs, on the other hand, are *equivariant* to these transformations, meaning they can handle them more effectively. This is achieved through the use of *steerable convolutions*, which are a type of convolution operation that can adapt to different transformations.
By using Clifford algebra and steerable convolutions, CS-CNNs can capture the inherent structure of the data more accurately, leading to better performance on tasks like image classification and generation compared to standard CNNs and other state-of-the-art methods. This is particularly useful in applications where the data exhibits certain symmetries or transformations that are important for the problem at hand.
## Technical Explanation
The authors of this paper introduce Clifford-Steerable Convolutional Neural Networks (CS-CNNs), a novel neural network architecture that leverages the mathematical structure of [Clifford algebra](https://aimodels.fyi/papers/arxiv/theory-equivariant-quantum-neural-networks) to achieve equivariance to transformations in the Clifford group.
Clifford algebra is a generalization of complex numbers that can represent and manipulate multidimensional geometric objects and transformations. By representing data in Clifford algebra, CS-CNNs can better capture the underlying symmetries and structures present in the data, such as rotations, reflections, and other spatial transformations.
The key innovation of CS-CNNs is the use of *steerable convolutions*, which are a type of convolution operation that can adapt to different transformations of the input data. This allows the network to be equivariant to the transformations encoded in the Clifford algebra representation, enabling more efficient and effective learning and inference.
The authors evaluate the performance of CS-CNNs on various tasks, including image classification and image generation, and demonstrate that they outperform standard CNNs and other state-of-the-art architectures. This highlights the advantages of using Clifford algebra and steerable convolutions to better capture and represent the underlying structure of the data.
## Critical Analysis
The paper presents a promising approach to improving the performance of convolutional neural networks by leveraging Clifford algebra and steerable convolutions. However, there are a few potential limitations and areas for further research:
- The paper focuses on 2D data, such as images, but it would be interesting to see how CS-CNNs perform on 3D or higher-dimensional data, which could further showcase the advantages of the Clifford algebra representation.
- The authors mention that CS-CNNs can be extended to other types of neural network layers, such as [equivariant fully-connected layers](https://aimodels.fyi/papers/arxiv/probabilistic-approach-to-learning-degree-equivariance-steerable), but this is not explored in the current work.
- The computational complexity of the Clifford algebra operations and steerable convolutions may be higher than standard convolutions, which could impact the efficiency and scalability of CS-CNNs, especially for large-scale applications.
Overall, the paper presents an innovative approach to improving the performance of convolutional neural networks, and the results suggest that further research and development in this direction could lead to significant advancements in the field of machine learning.
## Conclusion
The Clifford-Steerable Convolutional Neural Network (CS-CNN) introduced in this paper represents a significant advancement in the field of deep learning by leveraging the mathematical structure of Clifford algebra and steerable convolutions to achieve equivariance to a wide range of data transformations.
By representing data in Clifford algebra and using steerable convolutions, CS-CNNs can more effectively capture the underlying symmetries and patterns in the data, leading to improved performance on tasks like image classification and generation compared to standard CNNs and other state-of-the-art methods.
The potential impact of this research extends beyond just image-based applications, as the principles of Clifford algebra and equivariant neural networks could be applied to a variety of other domains, such as [3D object recognition](https://aimodels.fyi/papers/arxiv/leveraging-so3-steerable-convolutions-pose-robust-semantic), [quantum machine learning](https://aimodels.fyi/papers/arxiv/theory-equivariant-quantum-neural-networks), and [permutation-equivariant learning](https://aimodels.fyi/papers/arxiv/permutation-equivariant-quantum-convolutional-neural-networks). As the field of deep learning continues to evolve, innovations like CS-CNNs will play a crucial role in advancing the state-of-the-art and expanding the capabilities of artificial intelligence systems.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
1,886,112 | Zero-shot Image Editing with Reference Imitation | Zero-shot Image Editing with Reference Imitation | 0 | 2024-06-12T18:27:07 | https://aimodels.fyi/papers/arxiv/zero-shot-image-editing-reference-imitation | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [Zero-shot Image Editing with Reference Imitation](https://aimodels.fyi/papers/arxiv/zero-shot-image-editing-reference-imitation). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- This paper introduces a novel approach for zero-shot image editing using reference imitation.
- The method allows users to edit images by providing a reference image that illustrates the desired editing effect, rather than relying on complex instructions or manual adjustments.
- The system is able to learn the editing operations from the reference image and apply them to the target image in a zero-shot manner, without any additional training.
## Plain English Explanation
The research paper presents a new way to edit images without needing special training or complex instructions. Typically, when you want to edit an image, you might have to follow detailed steps or use specialized software. This new method is different - instead of complicated instructions, you can simply provide a reference image that shows the kind of edits you want to make.
The system [learns from the reference image](https://aimodels.fyi/papers/arxiv/text-driven-image-editing-via-learnable-regions) and then [applies those edits to your target image](https://aimodels.fyi/papers/arxiv/zone-zero-shot-instruction-guided-local-editing). So it's like you're imitating the changes made in the reference image. This "zero-shot" approach means the system doesn't need any additional training - it can figure out how to do the edits just from the reference you provide.
The key advantage is that it's much more intuitive and accessible for regular users, who may not be experts in photo editing software. By using a visual reference as a guide, the system can make the desired changes [without the user having to manually edit the image themselves](https://aimodels.fyi/papers/arxiv/i2vedit-first-frame-guided-video-editing-via). This could be helpful for tasks like retouching photos, adding special effects, or even [making consistent edits across a series of images](https://aimodels.fyi/papers/arxiv/temporally-consistent-object-editing-videos-using-extended).
## Technical Explanation
The paper introduces a novel image editing framework called Zero-shot Image Editing with Reference Imitation (ZEIR). The core idea is to leverage a reference image that illustrates the desired editing effect, and use it to guide the editing of a target image in a zero-shot manner.
The ZEIR architecture consists of three main components:
1. **Reference Encoder**: This module encodes the reference image into a latent representation that captures the editing operations.
2. **Target Encoder**: This module encodes the target image that the user wants to edit.
3. **Editing Transformer**: This module takes the latent representations from the reference and target encoders, and applies the inferred editing operations to the target image.
The key innovation is that the system can perform the desired image edits without any additional training or fine-tuning, simply by imitating the reference image. This "zero-shot" capability is enabled by the Editing Transformer, which learns to map the latent representations of the reference and target images to the appropriate editing operations.
The authors evaluate ZEIR on a variety of image editing tasks, including photo retouching, style transfer, and object manipulation. The results demonstrate that ZEIR can achieve high-quality editing results that are on par with or even surpass those produced by supervised methods.
## Critical Analysis
The ZEIR approach represents a promising step towards more intuitive and accessible image editing tools. By allowing users to provide a visual reference as guidance, it avoids the need for complex instructions or manual adjustments, which can be a significant barrier for non-expert users.
However, the paper does acknowledge some limitations of the current approach. For example, the system may struggle with highly complex or unusual editing operations that are not well-represented in the training data. There is also the potential for unintended biases or artifacts to be introduced if the reference images used are not carefully curated.
Additionally, while the zero-shot capability is a notable strength, it may come at the cost of reduced flexibility or control compared to more traditional editing tools. Users may have less fine-grained control over the individual editing operations applied to the image.
Future research could explore ways to further expand the range of supported editing operations, perhaps by incorporating more advanced techniques like [disrupting style mimicry attacks](https://aimodels.fyi/papers/arxiv/disrupting-style-mimicry-attacks-video-imagery) or [learnable regions](https://aimodels.fyi/papers/arxiv/text-driven-image-editing-via-learnable-regions). Addressing these challenges could help make ZEIR and similar approaches even more powerful and versatile for a wide range of image editing tasks.
## Conclusion
The Zero-shot Image Editing with Reference Imitation (ZEIR) approach presented in this paper offers a novel and promising solution for more intuitive and accessible image editing. By allowing users to guide the editing process using a reference image, rather than relying on complex instructions or manual adjustments, ZEIR represents a significant step forward in making sophisticated image editing capabilities available to a broader audience.
While the current implementation has some limitations, the underlying concept of leveraging visual references to drive zero-shot editing operations holds great potential. As the field of AI-powered image editing continues to evolve, approaches like ZEIR could play a key role in democratizing access to powerful creative tools and enabling more people to express their artistic vision through digital imagery.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
1,886,111 | The statistical thermodynamics of generative diffusion models: Phase transitions, symmetry breaking and critical instability | The statistical thermodynamics of generative diffusion models: Phase transitions, symmetry breaking and critical instability | 0 | 2024-06-12T18:26:32 | https://aimodels.fyi/papers/arxiv/statistical-thermodynamics-generative-diffusion-models-phase-transitions | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [The statistical thermodynamics of generative diffusion models: Phase transitions, symmetry breaking and critical instability](https://aimodels.fyi/papers/arxiv/statistical-thermodynamics-generative-diffusion-models-phase-transitions). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- Generative diffusion models have shown impressive performance in machine learning and generative modeling.
- While these models are based on ideas from non-equilibrium physics, variational inference, and stochastic calculus, this paper demonstrates that they can be understood using the tools of [equilibrium statistical mechanics](https://aimodels.fyi/papers/arxiv/nonequilbrium-physics-generative-diffusion-models).
- The paper reveals that generative diffusion models undergo [second-order phase transitions](https://aimodels.fyi/papers/arxiv/quantum-state-generation-structure-preserving-diffusion-model) related to symmetry breaking phenomena.
- It is shown that these phase transitions are always in a mean-field universality class, as they result from a self-consistency condition in the generative dynamics.
- The critical instability arising from these phase transitions is identified as the key to the generative capabilities of these models, which are characterized by a set of mean-field critical exponents.
- The dynamic equation of the generative process is interpreted as a [stochastic adiabatic transformation](https://aimodels.fyi/papers/arxiv/diffusion-models-as-stochastic-quantization-lattice-field) that minimizes the free energy while maintaining thermal equilibrium.
## Plain English Explanation
Generative diffusion models are a type of machine learning model that can create new, realistic-looking data, such as images or text. These models are based on the concepts of non-equilibrium physics, variational inference, and stochastic calculus. However, this paper shows that we can understand many aspects of these models using the tools of [equilibrium statistical mechanics](https://aimodels.fyi/papers/arxiv/nonequilbrium-physics-generative-diffusion-models), which is the study of how large groups of particles or objects behave when they are in a state of balance.
The paper explains that generative diffusion models go through [second-order phase transitions](https://aimodels.fyi/papers/arxiv/quantum-state-generation-structure-preserving-diffusion-model), which are like the changes that happen when a material changes from a solid to a liquid or a gas. These phase transitions are always in a "mean-field" class, which means they are the result of a self-consistency condition in the way the model generates new data.
The paper argues that the critical instability, or the point where the model becomes unstable, that arises from these phase transitions is the key to the model's ability to generate new, realistic-looking data. This instability is characterized by a set of "mean-field critical exponents," which are mathematical values that describe the model's behavior.
Finally, the paper interprets the equation that governs the generative process as a [stochastic adiabatic transformation](https://aimodels.fyi/papers/arxiv/diffusion-models-as-stochastic-quantization-lattice-field), which means a gradual change that keeps the system in a state of thermal equilibrium, or balance, while minimizing the "free energy," which is a measure of the system's energy and disorder.
## Technical Explanation
The paper [Nonequilibrium Physics in Generative Diffusion Models](https://aimodels.fyi/papers/arxiv/nonequilbrium-physics-generative-diffusion-models) shows that many aspects of generative diffusion models, which have achieved impressive performance in machine learning and generative modeling, can be understood using the tools of equilibrium statistical mechanics.
The authors demonstrate that these models undergo [second-order phase transitions](https://aimodels.fyi/papers/arxiv/quantum-state-generation-structure-preserving-diffusion-model) corresponding to symmetry breaking phenomena. They prove that these phase transitions are always in a mean-field universality class, as they result from a self-consistency condition in the generative dynamics.
The paper argues that the critical instability arising from these phase transitions is the key to the generative capabilities of these models, which are characterized by a set of mean-field critical exponents. The authors also show that the [dynamic equation of the generative process](https://aimodels.fyi/papers/arxiv/diffusion-models-as-stochastic-quantization-lattice-field) can be interpreted as a stochastic adiabatic transformation that minimizes the free energy while keeping the system in thermal equilibrium.
## Critical Analysis
The paper provides a novel perspective on understanding generative diffusion models using the tools of equilibrium statistical mechanics. This approach offers valuable insights into the underlying mechanisms driving the impressive performance of these models.
One potential limitation of the research is that it focuses primarily on the theoretical aspects of the models, without extensive empirical validation. While the authors demonstrate the viability of their statistical mechanics-based interpretation, further experimental and practical evaluations would help strengthen the connection between the theoretical framework and real-world applications of generative diffusion models.
Additionally, the paper's analysis is limited to second-order phase transitions and mean-field universality classes. It would be interesting to explore whether higher-order phase transitions or other universality classes might also be relevant in the context of [generative diffusion models](https://aimodels.fyi/papers/arxiv/deep-generative-modelling-canonical-ensemble-differentiable-thermal) and [their theoretical foundations](https://aimodels.fyi/papers/arxiv/theoretical-research-generative-diffusion-models-overview).
Overall, the paper presents a compelling and insightful perspective on the theoretical underpinnings of generative diffusion models, which could inspire further research into the [fundamental principles](https://aimodels.fyi/papers/arxiv/theoretical-research-generative-diffusion-models-overview) governing these powerful generative modeling techniques.
## Conclusion
This paper demonstrates that the impressive performance of generative diffusion models can be understood using the tools of equilibrium statistical mechanics. By showing that these models undergo second-order phase transitions corresponding to symmetry breaking phenomena, the authors provide a novel theoretical framework for interpreting the generative capabilities of these models.
The key insights from this research are that the critical instability arising from the phase transitions lies at the heart of the models' generative power, and the dynamic equation of the generative process can be interpreted as a stochastic adiabatic transformation that minimizes the free energy while maintaining thermal equilibrium.
These findings have the potential to inform the future development of generative diffusion models, as well as deepen our understanding of the fundamental principles underlying these powerful machine learning techniques. As the field of generative modeling continues to advance, research that bridges the gap between theory and practice, as demonstrated in this paper, will be invaluable in driving further progress.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
1,886,110 | RAG Does Not Work for Enterprises | RAG Does Not Work for Enterprises | 0 | 2024-06-12T18:25:58 | https://aimodels.fyi/papers/arxiv/rag-does-not-work-enterprises | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [RAG Does Not Work for Enterprises](https://aimodels.fyi/papers/arxiv/rag-does-not-work-enterprises). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- This paper explores the challenges and opportunities in implementing retrieval-augmented generation (RAG) technology in enterprise settings.
- RAG combines language models with information retrieval to improve the accuracy and relevance of generated outputs.
- However, deploying RAG in enterprises requires addressing concerns around data security, scalability, and integration.
- The paper proposes an evaluation framework to validate enterprise-grade RAG solutions, including quantitative testing, qualitative analysis, and industry case studies.
- The goal is to help demonstrate how purpose-built RAG architectures can deliver accuracy and relevance improvements with enterprise-grade security and compliance.
## Plain English Explanation
Large language models have become powerful tools for generating human-like text, but their outputs can sometimes lack accuracy or relevance. **[Retrieval-Augmented Generation (RAG)](https://aimodels.fyi/papers/arxiv/retrieval-augmented-generation-ai-generated-content-survey)** aims to address this by combining the language model with an information retrieval system. This allows the model to supplement its knowledge by searching a database and incorporating relevant information into the generated text.
While RAG has shown promising results in research settings, implementing it in an enterprise context poses some unique challenges. Enterprises need to ensure data security, scalability, and seamless integration with existing systems. The paper explores these enterprise-specific requirements and surveys current approaches and limitations.
To help validate enterprise-grade RAG solutions, the authors propose a comprehensive evaluation framework. This includes quantitative testing to measure accuracy and relevance, qualitative analysis to assess the generated content, and industry case studies to demonstrate real-world performance. The goal is to provide a clear way for enterprises to assess whether a RAG system can deliver the necessary improvements while meeting their security and compliance needs.
Overall, the paper highlights the potential of RAG technology to enhance large language models, but also emphasizes the importance of addressing the unique requirements of enterprise deployments. By collaborating with industry partners, researchers may be able to accelerate the development and adoption of retrieval-augmented generation in real-world applications.
## Technical Explanation
The paper begins by outlining the potential of **[Retrieval-Augmented Generation (RAG)](https://aimodels.fyi/papers/arxiv/retrieval-augmented-generation-ai-generated-content-survey)** to improve the accuracy and relevance of language model outputs. RAG achieves this by incorporating information retrieval capabilities, allowing the model to supplement its knowledge by accessing relevant information from a database.
However, the authors note that implementing RAG in enterprise settings poses several challenges. Enterprises have specific requirements around data security, scalability, and integration with existing systems that may not be addressed by standard RAG approaches. The paper examines these unique enterprise requirements and reviews current methods and their limitations.
To help validate enterprise-grade RAG solutions, the authors propose a comprehensive evaluation framework. This includes:
1. **Quantitative Testing**: Measuring the accuracy, relevance, and other key metrics of the generated outputs.
2. **Qualitative Analysis**: Assessing the quality, coherence, and appropriateness of the generated content.
3. **Ablation Studies**: Isolating the contribution of the retrieval component to understand its impact.
4. **Industry Case Studies**: Evaluating the system's performance in real-world enterprise scenarios.
The goal of this framework is to provide a clear and standardized way for enterprises to assess whether a RAG system can deliver the necessary improvements in accuracy and relevance while also meeting their security, compliance, and integration requirements.
The paper also discusses potential areas for advancing enterprise RAG, such as improvements in **[semantic search](https://aimodels.fyi/papers/arxiv/multi-source-retrieval-question-answering-framework-based)**, **[hybrid queries](https://aimodels.fyi/papers/arxiv/duetrag-collaborative-retrieval-augmented-generation)**, and optimized retrieval mechanisms.
## Critical Analysis
The paper does a thorough job of highlighting the unique challenges and requirements for implementing RAG in enterprise settings. The proposed evaluation framework is a valuable contribution, as it provides a structured approach for enterprises to assess the suitability of RAG solutions for their specific needs.
One potential limitation is that the paper does not delve deeply into the technical details of the various RAG approaches and their trade-offs. While the focus is on the enterprise-level concerns, a more in-depth discussion of the architectural choices and their implications could be valuable for researchers and developers working on these systems.
Additionally, the paper mentions the importance of collaboration between researchers and industry partners, but does not provide specific recommendations or examples of how such collaborations could be structured or facilitated. Exploring successful models of industry-academia partnerships in this domain could further strengthen the paper's recommendations.
Overall, the paper provides a compelling case for the importance of addressing enterprise-specific requirements in the development and deployment of RAG technology. By encouraging a more holistic and rigorous evaluation process, the authors aim to help bridge the gap between the research potential of RAG and its practical implementation in real-world business settings.
## Conclusion
This paper explores the unique challenges and opportunities in bringing **[Retrieval-Augmented Generation (RAG)](https://aimodels.fyi/papers/arxiv/retrieval-augmented-generation-ai-generated-content-survey)** technology into the enterprise realm. While RAG has shown promise in improving the accuracy and relevance of language model outputs, implementing it in enterprises requires addressing concerns around data security, scalability, and integration.
To help validate enterprise-grade RAG solutions, the authors propose a comprehensive evaluation framework that includes quantitative testing, qualitative analysis, ablation studies, and industry case studies. This framework aims to provide a standardized approach for enterprises to assess whether a RAG system can deliver the necessary improvements while meeting their specific requirements.
The paper also discusses potential advances in areas like **[semantic search](https://aimodels.fyi/papers/arxiv/multi-source-retrieval-question-answering-framework-based)** and **[hybrid queries](https://aimodels.fyi/papers/arxiv/duetrag-collaborative-retrieval-augmented-generation)** that could further enhance enterprise-grade RAG solutions.
Overall, the findings presented in this paper highlight the importance of close collaboration between researchers and industry partners to accelerate the development and deployment of retrieval-augmented generation technology in real-world enterprise settings.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
1,886,109 | Separating the Chirp from the Chat: Self-supervised Visual Grounding of Sound and Language | Separating the Chirp from the Chat: Self-supervised Visual Grounding of Sound and Language | 0 | 2024-06-12T18:24:15 | https://aimodels.fyi/papers/arxiv/separating-chirp-from-chat-self-supervised-visual | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [Separating the Chirp from the Chat: Self-supervised Visual Grounding of Sound and Language](https://aimodels.fyi/papers/arxiv/separating-chirp-from-chat-self-supervised-visual). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- This paper introduces a self-supervised approach for learning visual representations from audio-visual correspondence.
- The method aims to separate "chirp" (environmental sounds) from "chat" (speech) and learn visual representations that are grounded in both types of audio.
- The learned representations can be used for downstream tasks like visual recognition and audio-visual event detection.
## Plain English Explanation
The paper is about a new way to teach computers to understand images and sounds together. Computers are often good at recognizing objects in images or understanding speech, but they struggle to connect the two - to understand how the sounds we hear relate to what we see.
The researchers developed a self-supervised [<a href="https://aimodels.fyi/papers/arxiv/learning-spatial-features-from-audio-visual-correspondence">audio-visual learning</a>] technique that can learn visual representations from both environmental sounds (like a bird chirping) and human speech. This allows the model to learn features that are relevant for both types of audio, rather than just focusing on one or the other.
By learning to associate visual information with different types of sounds, the model can better understand the world around it. This could be useful for tasks like [<a href="https://aimodels.fyi/papers/arxiv/cross-modal-cognitive-consensus-guided-audio-visual">audio-visual event detection</a>] or [<a href="https://aimodels.fyi/papers/arxiv/t-vsl-text-guided-visual-sound-source">sound source localization</a>] - for example, knowing that a barking sound is likely coming from a dog in the image.
The key innovation is the ability to separate "chirp" from "chat" - to learn representations that are grounded in both environmental sounds and human speech, rather than just one or the other. This makes the model more versatile and better able to understand the rich, multimodal nature of the real world.
## Technical Explanation
The paper proposes a self-supervised learning framework for audio-visual representation learning. The core idea is to learn visual representations that can be grounded in both environmental sounds ("chirps") and human speech ("chat").
The architecture consists of an audio encoder, a visual encoder, and a multimodal fusion module. The audio encoder processes the input audio and extracts features. The visual encoder processes the input image and extracts visual features. These features are then fused using a [<a href="https://aimodels.fyi/papers/arxiv/unified-video-language-pre-training-synchronized-audio">cross-modal attention mechanism</a>] to learn a joint audio-visual representation.
The model is trained in a self-supervised manner using contrastive learning. Given an image-audio pair, the goal is to predict whether the audio matches the visual content. This forces the model to learn visual representations that are aligned with the semantics of the audio, including both environmental sounds and speech.
The key innovation is the ability to separate "chirp" from "chat" - the model learns to extract visual features that are relevant to both types of audio, rather than just focusing on one or the other. This is achieved through the use of a specialized audio encoder that can distinguish between environmental sounds and speech.
The learned representations are evaluated on downstream tasks like visual recognition and audio-visual event detection, demonstrating the benefits of the proposed [<a href="https://aimodels.fyi/papers/arxiv/mlca-avsr-multi-layer-cross-attention-fusion">multimodal learning approach</a>].
## Critical Analysis
The paper presents a promising approach for learning audio-visual representations, but there are a few potential limitations and areas for further research:
1. The experiments are conducted on relatively constrained datasets, and it would be valuable to evaluate the approach on more diverse and challenging datasets to assess its real-world applicability.
2. The paper does not provide a detailed analysis of the learned visual representations or how they differ from representations learned without the "chirp" vs. "chat" distinction. A more in-depth exploration of the learned features could provide additional insights.
3. The reliance on contrastive learning raises questions about the scalability of the approach, as contrastive methods can be computationally expensive and may struggle with large-scale datasets. Exploring alternative self-supervised objectives could be an interesting avenue for future research.
4. While the paper demonstrates the benefits of the proposed approach for downstream tasks, the specific use cases and practical implications are not fully explored. A deeper discussion of the potential applications and real-world impact of the technology would be valuable.
Overall, the paper presents an intriguing and well-executed piece of research that advances the state of the art in audio-visual representation learning. However, further exploration of the limitations and potential avenues for improvement could strengthen the broader impact of the work.
## Conclusion
This paper introduces a self-supervised approach for learning visual representations that are grounded in both environmental sounds and human speech. By separating "chirp" from "chat", the model learns features that are relevant for a wide range of audio-visual scenarios, rather than just focusing on one type of audio.
The learned representations can be leveraged for downstream tasks like visual recognition and audio-visual event detection, demonstrating the practical benefits of this multimodal learning approach. While the paper has some limitations, it represents an important step forward in our ability to create AI systems that can understand the rich, multimodal nature of the real world.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
1,886,108 | 🔥Binary Search❄️ | This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer. ... | 0 | 2024-06-12T18:23:54 | https://dev.to/rcmonteiro/binary-search-5hbn | devchallenge, cschallenge, computerscience, beginners | _This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer._
## Explainer
> **Binary search** is like a super-fast game of "Hot or Cold" with a sorted list: you keep guessing the middle number, then cut the list in half based on whether you're too high or too low, finding the target in no time!
## Additional Context
I think Binary Search is one of the first concepts every new developer learns, but I never thought to compare it to the game Hot and Cold. This community is really making me think differently! | rcmonteiro |
1,886,107 | What makes this Gaming Platform games stand out in the crowded world of mobile gaming? | "This Gaming Platform games have emerged as a true game-changer in the mobile gaming industry,... | 0 | 2024-06-12T18:23:54 | https://dev.to/claywinston/what-makes-this-gaming-platform-games-stand-out-in-the-crowded-world-of-mobile-gaming-37aa | gamedev, mobile, mobilegames, games | "This [Gaming Platform](https://medium.com/@adreeshelk/nostra-brings-games-to-life-with-the-game-hosting-revolution-017dd8bfb0c8?utm_source=referral&utm_medium=Medium&utm_campaign=Nostra) games have emerged as a true game-changer in the mobile gaming industry, offering a unique and unparalleled experience that sets them apart from the competition. One of the key factors that distinguish This Gaming Platform is their seamless integration with the lock screen functionality of Android devices. This innovative approach allows users to access a wide variety of games instantly, without the need for downloads or installations, making gaming more convenient and accessible than ever before.
This [Gaming Platform](https://nostra.gg/articles/Nostra-The-Future-of-Mobile-Game-Hosting-is-Here.html?utm_source=referral&utm_medium=article&utm_campaign=Nostra) games boast an extensive library of high-quality titles that cater to diverse gaming preferences. From classic puzzle games like sudoku and chess to action-packed adventures like Wothan the Barbarian and Fruit Katana, This Gaming Platform games offer something for everyone. The platform collaborates with talented game developers to create visually stunning and immersive games that rival the quality of traditional downloaded titles.
What truly sets This Gaming Platform games apart is their commitment to delivering an exceptional gaming experience. With intuitive controls, engaging gameplay mechanics, and captivating narratives, This Gaming Platform games keep players hooked and coming back for more. The platform leverages cutting-edge technology to ensure smooth, lag-free performance, allowing players to fully immerse themselves in the gaming world.
Moreover, This Gaming Platform games foster a vibrant and interactive gaming community. Through leaderboards, challenges, and social features, players can connect with friends, compete for high scores, and showcase their achievements. This sense of community and competition adds an extra layer of excitement and motivation to the gaming experience.
In a world where mobile gaming is constantly evolving,This Gaming Platform games have successfully carved out a unique niche by combining convenience, quality, and innovation. By offering a diverse selection of instantly accessible games, delivering top-notch performance, and fostering a thriving community, This Gaming Platform games have redefined what mobile gaming can be, setting a new standard for the industry to follow. | claywinston |
1,884,889 | Understanding Dash Agents: A LangChain Case Study | In software development, integrating APIs and SDKs is crucial. Yet, the process can be tedious and... | 0 | 2024-06-12T18:23:51 | https://medium.com/@yogesh_51958/understanding-dash-agents-a-langchain-case-study-5e5231f7157e | langchain, codegen, commanddash, llm | In software development, integrating APIs and SDKs is crucial. Yet, the process can be tedious and time-consuming. Documentation, syntax complexities, and debugging can quickly become time-consuming roadblocks. Thankfully, this is where Dash Agents comes in to ease these headaches.
This blog post explores the capabilities of Dash Agents. It shows how they simplify the integration of APIs and SDKs for tools and frameworks like LangChain.
## What is LangChain?
LangChain is a framework that allows users to integrate LLMs into their projects. It provides a comprehensive toolkit for:
- **Model Handling**: It supports various LLMs and allows for easy integration of custom models, offering prompt templates and engineering tools.
- **Data Processing and Pipelines**: LangChain provides tools for data preprocessing and augmentation, along with the ability to create custom pipelines with a modular design.
- **Deployment and Monitoring**: It supports cloud deployment and scaling, offers evaluation metrics and real-time monitoring, and ensures security and compliance measures are in place.
You can learn more about the LangChain framework on their [Official site](https://www.langchain.com).
## Introducing LangChain Agent
Imagine having an intelligent assistant in your IDE. It's always there to help you integrate any LangChain-based code into your project. That's precisely what the LangChain Dash Agent offers.
Why You'll Love LangChain Agent:
- **Extensive API Knowledge**: It is shared with vast knowledge of LangChain framework documentation and sample codes, allowing it to provide nearly accurate code and insights.
- **Contextual Awareness**: It is designed to respond to queries with the understanding of your codebase and project context. Thus, capable of providing better assistance and solutions.
- **Saving Time During Coding**: It generates the required code for you and if required debugs the code for you, saving you a lot of time. Thus, forget the days of tedious manual API docs searching and then coding only to realise that you need to fix a bug by searching multiple sources.
## Install LangChain Agent
Let's start by setting up your agent. If you've already LangChain installed please continue to the next section.
**1. Install CommandDash Extension**
Head over to the VS Code Marketplace and search for "CommandDash." Install the extension.
**2. Sign in to CommandDash**
Open the extension once installed. You'll need to sign in and provide your [Gemini key](https://aistudio.google.com/app/apikey).
**3. Install LangChain Agent**
Then, go to the CommandDash Marketplace within your Extension.
Search for "LangChain" and install the agent.
Next, it's time to put the installed LangChain agent to use.
## Getting Started with LangChain Agent
Finally, it is time to put the agent to work with a compelling use case: building a creative text generator in Python.
This program takes the starting phrases of the poem as input. Then, it uses an LLM to extract the user's writing style and generate the remaining part of the poem.
Start by activating the LangChain agent. In your CommandDash extension, type `@` in the bottom text field and select "LangChain" from the dropdown:
This activates the agent within your current workspace.
For demo purposes, we will attempt to use OpenAI's latest model - "GPT-4o". Type the following query into the CommandDash text field:
> "Generate the Python code to create an application to generate poem with the user-supplied initial phrases using OpenAI gpt-4o model"
The agent will analyze your request and will respond something like:
```python
from langchain_openai import ChatOpenAI
from langchain_core.prompts import ChatPromptTemplate
from langchain_core.messages import HumanMessage, SystemMessage
os.environ["OPENAI_API_KEY"] = "YOUR_OPENAI_API_KEY"
def generate_poem(initial_phrases, model="gpt-4o"):
"""Generates a poem using OpenAI's GPT-4o model.
Args:
initial_phrases (list): A list of initial phrases to start the poem.
model (str, optional): The OpenAI model to use. Defaults to "gpt-4o".
Returns:
str: The generated poem.
"""
llm = ChatOpenAI(model=model)
prompt_template = ChatPromptTemplate.from_messages(
[
SystemMessage(content="You are a helpful and creative poet. Generate a poem using the following initial phrases as inspiration: "),
HumanMessage(content=" ".join(initial_phrases))
]
)
messages = prompt_template.format_messages()
response = llm.invoke(messages)
return response.content
if __name__ == "__main__":
initial_phrases = input("Enter your initial phrases separated by commas: ").split(",")
poem = generate_poem(initial_phrases)
print("Generated Poem:\n\n", poem)
Explanation:
Some explanation about the code
...
```
In our case, we haven't asked for any API integration request but rather an app itself. Thus, the agent supplied us with the whole end-to-end Python code.
Copy the code to a blank Python file and read the generated code. Right now, you can also update the code as needed. For instance, the current generated code is missing the `import os` statement. So, I will manually add the missing import.
> **Tip**: At times, if you ever feel like the solution isn't straightforward, or you want to explore the problem more deeply or find a quick fix. Feel free to continue conversing with the agent.
Finally, add your [OpenAI API](https://platform.openai.com/docs/quickstart/account-setup) key and run the app by executing the updated code:
## Closing Thoughts
LangChain agent is not all that CommandDash has to offer. We have more agents for various APIs and SDKs, such as [Firebase Genkit](https://commanddash.hashnode.dev/how-to-use-firebase-genkit-in-your-nodejs-applications?source=more_articles_bottom_blogs), Pandas AI, Vercel AI, and more.
Additionally, we also allow developers like you to create public agents for your teams and other developers. If interested, do visit the [Dash Agents Docs](https://www.commanddash.io/docs/introduction).
That concludes this blog post. Now it's time to try it out yourself and materialize your LangChain use case to code instantly with CommandDash. We always love to hear what you build! | yogesh009 |
1,886,106 | GenAI Arena: An Open Evaluation Platform for Generative Models | GenAI Arena: An Open Evaluation Platform for Generative Models | 0 | 2024-06-12T18:23:41 | https://aimodels.fyi/papers/arxiv/genai-arena-open-evaluation-platform-generative-models | machinelearning, ai, beginners, datascience | *This is a Plain English Papers summary of a research paper called [GenAI Arena: An Open Evaluation Platform for Generative Models](https://aimodels.fyi/papers/arxiv/genai-arena-open-evaluation-platform-generative-models). If you like these kinds of analysis, you should subscribe to the [AImodels.fyi newsletter](https://aimodels.substack.com) or follow me on [Twitter](https://twitter.com/mikeyoung44).*
## Overview
- Introduces GenAI Arena, an open-source platform for evaluating generative AI models
- Aims to provide a comprehensive and standardized framework for assessing the performance of various generative models
- Includes a diverse set of datasets, tasks, and metrics to enable thorough and consistent model evaluation
## Plain English Explanation
GenAI Arena is a new tool that makes it easier to test and compare different AI models that can generate content, like images, text, or other types of data. The goal of this platform is to provide a standardized and thorough way to evaluate how well these generative AI models perform on a variety of tasks and datasets.
By having a common set of tests and metrics, researchers and developers can more easily assess the strengths and weaknesses of their models and see how they stack up against others. This helps advance the field of generative AI by enabling more meaningful comparisons and identifying areas for improvement.
The platform includes a diverse range of datasets and evaluation tasks, spanning applications such as [image generation](https://aimodels.fyi/papers/arxiv/generative-ai-visualization-state-art-future-directions), [text generation](https://aimodels.fyi/papers/arxiv/bench-are-lmms-masters-at-evaluating-ai), and [human motion generation](https://aimodels.fyi/papers/arxiv/establishing-unified-evaluation-framework-human-motion-generation). This comprehensive suite of benchmarks allows for a holistic assessment of generative model capabilities.
## Technical Explanation
The paper introduces GenAI Arena, a novel open-source evaluation platform for generative AI models. The platform aims to provide a standardized and comprehensive framework for assessing the performance of various generative models across a diverse set of datasets and tasks.
The key components of GenAI Arena include:
- A curated collection of datasets spanning different modalities, such as images, text, and human motion
- A wide range of evaluation tasks, including generation quality, diversity, and controllability
- A suite of established and novel evaluation metrics to capture various aspects of model performance
- Leaderboards and comparison tools to facilitate benchmarking and model development
The authors demonstrate the capabilities of GenAI Arena by evaluating several state-of-the-art generative models on a variety of tasks. The results highlight the platform's ability to provide comprehensive and meaningful insights into model strengths and weaknesses, enabling more robust model development and comparison.
## Critical Analysis
The GenAI Arena platform addresses an important need in the field of generative AI by providing a standardized and open-source evaluation framework. By offering a diverse set of datasets, tasks, and metrics, the platform enables a more thorough and consistent assessment of generative models, which is crucial for advancing the state of the art.
However, the paper does not delve into the potential limitations or caveats of the platform. For example, the selection of datasets and tasks may not fully capture the breadth of real-world applications, and the evaluation metrics may have inherent biases or fail to capture certain aspects of model performance.
Additionally, the paper could have discussed the challenges in designing a platform that can accommodate the rapid progress in generative AI and the emergence of new model architectures and tasks. Maintaining the relevance and comprehensiveness of the platform over time will be an ongoing challenge.
Further research is needed to explore the platform's ability to capture nuanced aspects of model performance, such as [safety and robustness](https://aimodels.fyi/papers/arxiv/adversarial-ai-art-understanding-generation-detection-benchmarking), [creative capabilities](https://aimodels.fyi/papers/arxiv/automating-creativity), and [alignment with human values](https://aimodels.fyi/papers/arxiv/bench-are-lmms-masters-at-evaluating-ai). Incorporating these considerations into the evaluation framework would further strengthen the platform's utility in advancing the field of generative AI.
## Conclusion
The GenAI Arena platform represents a significant step forward in the evaluation of generative AI models. By providing a standardized and comprehensive framework, it enables more meaningful comparisons and insights into model performance, ultimately driving the development of more capable and reliable generative systems.
As the field of generative AI continues to evolve, the GenAI Arena platform can serve as a valuable tool for researchers and developers to assess their models, identify areas for improvement, and contribute to the overall progress of the field. Its open-source nature and focus on diverse benchmarking make it a promising initiative for advancing the state of the art in generative AI.
**If you enjoyed this summary, consider subscribing to the [AImodels.fyi newsletter](https://aimodels.substack.com) or following me on [Twitter](https://twitter.com/mikeyoung44) for more AI and machine learning content.** | mikeyoung44 |
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**Titanium SDK** helps you to build native cross-platform mobile application using JavaScript and the Titanium API, which abstracts the native APIs of the mobile platforms. Titanium empowers you to create immersive, full-featured applications, featuring over 80% code reuse across mobile apps.
The new version 12.3.1.GA is now available and some of the features are:
fix(ios): fix privacy-related Filesystem APIs
handle first privacy manifest changes
Revert "feat(ios): support multi-scene applications
node-appc update - fix: handle spaces in deployType and platform
fix noresults event in ListView width custom query
node-titanium-sdk update - fix: arm mac emulator fix, use platform for id
Ti.UI.Tab selected event returns no data
touchFeedbackColor not working for a bottomNavigation tab
switchCamera method was missing
Blog post: https://tidev.io/blog/sdk_12_3_1_ga
Changelog: https://titaniumsdk.com/guide/Titanium_SDK/Titanium_SDK_Release_Notes/Titanium_SDK_Release_Notes_12.x/Titanium_SDK_12.3.1.GA_Release_Note.html
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1,886,048 | Cultivating Open Source Community | Learn about the importance of belonging, motivation, and collaboration in open source community. | 0 | 2024-06-12T18:14:11 | https://opensauced.pizza/blog/open-source-community | opensource, community | ---
title: Cultivating Open Source Community
published: true
description: Learn about the importance of belonging, motivation, and collaboration in open source community.
tags: opensource, community
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/51v1bk2p3w3ak8zz8trn.png
# Use a ratio of 100:42 for best results.
# published_at: 2024-06-12 18:10 +0000
canonical_url: https://opensauced.pizza/blog/open-source-community
---
We all *need* community. Open source *needs* community. It’s the space where we collaborate and grow together by working to create something greater than the sum of its parts. When we look at the dynamics of open source communities, we see that the sense of mutual belonging and support is a key part of its success. Just as [Kelly-Ann Allen from The Psychology of Belonging](https://api.taylorfrancis.com/content/books/mono/download?identifierName=doi&identifierValue=10.4324/9780429327681&type=googlepdf) notes, our sense of belonging to groups—whether they are families, social groups, or professional communities—plays a significant role in our well-being and motivation:
> We find much of our meaning, identity, relevance and satisfaction in life through our sense of belonging to groups. At family, community and societal levels, we rely on others for support, validation and understanding. Belonging to groups, whether these be families, groups of friends, social groups, schools, workplaces or communities more broadly, has a positive effect on several key factors that contribute to our successful healthy functioning as human beings in a society.
In many ways, this is why open source community becomes such a vital part of the open source ecosystem. When we find belonging in a community, we’re more likely to grow, find meaning in challenges, and to feel a deeper sense of satisfaction.
## Shifting Sands of Motivation
When people stay in a community, it’s because they’re motivated to be there and there are opportunities to contribute. Ideally, contributors are motivated by the success and sustainability of the project. This requires a community that trusts the maintainers and their vision, creating a space for meaningful connections.
For example, [Tyler Williams](https://app.opensauced.pizza/u/coolsoftwaretyler) became a contributor to [mobx-state-tree](https://app.opensauced.pizza/s/mobxjs/mobx-state-tree?range=180) because his company was actively using it. Maintainer [Jamon Holmgren](https://app.opensauced.pizza/u/jamonholmgren) noticed and invited Tyler to become a maintainer. Tyler’s investment was motivated by using the project.
Other motivations include learning new technologies and enhancing resumes.
Depending on the contributor, this may mean fewer meaningful and sustained contributions and more work for the maintainers because their motivation isn’t tied to the project. Ideally, maintainers could encourage these contributors to stay involved and grow through a contributor ladder or other motivators.
### Contributor Confidence
To understand evolving motivations requires regularly engaging with your contributors and creating space and flexibility for their continued contributions. Creating feedback loops and regular check-ins with your active contributors can help to gauge their continued participation in your project, but also understanding the [Contributor Confidence](https://opensauced.pizza/docs/features/repo-pages/#insights-into-contributor-confidence) of the project can be a good way to understand if the contributors motivations are impacting whether or not they’re contributing or if the approachability of the project is an issue.
Contributor Confidence is a metric that helps us understand the likelihood of someone who interacts with a repository (by starring or forking it) coming back to actually contribute code or other content. For example, a high Contributor Confidence score (e.g., 37-50%) suggests a welcoming and active repository where your contributions are likely to be seen and valued, while a low score (e.g., 1-3%) might indicate it’s harder for outside contributors to get involved.
Motivations will change over time. Understanding these shifts and adapting is necessary for sustaining active participation.
## Fostering a Sense of Belonging
I recently caught up with Dave Kiss, on an [X Space about monetizing your open source project](https://x.com/saucedopen/status/1798777358180335883), and he talked about how important it was for him to be a part of the open source community, “A community isn't just a one-way approach. We have to sort of lean on each other and give back in ways that we can.” We see this sort of horizontal mentorship all the time in healthy open source communities.
Open source communities are a hidden gem of mentorship and learning. When we create a space where community members support each other, the community is more likely to thrive and help each other. In our recent episode of [The Secret Sauce with Kelsey Hightower](https://www.youtube.com/watch?v=MQbkN99eBD8&t=1519s), he points this out as well, “You can come in [to an open source community] and say, hey, I want to understand how operating systems work. And someone will be patient with you. It's like, all right, let's walk through the code. Let's walk through your contribution. Let's walk through the potential fix that moves this forward. I think that's the thing that a lot of people that have never contributed to open source don't understand what's so powerful about this particular segment of our industry.”
This support system is necessary for the growth and sustainability of open source projects and for cultivating a culture of continuous learning and growth. New contributors bring fresh perspectives and ideas, while experienced members guide and mentor them. This symbiotic relationship ensures individuals and projects continue to grow and adapt to new challenges.
### The Open Source AI Community: A Case Study in Innovation and Collaboration
The open source AI community is a great example of how collaborative efforts can lead to innovation. This community not only thrives on contributions from individual developers but also benefits from the involvement of large organizations and research institutions.
Even Meta, once known to have more of a guarded approach, shifted to open source AI, particularly with models like [LLaMA 2](https://app.opensauced.pizza/s/meta-llama/llama)
and LLaMA 3, leading to millions of downloads and customizations. The decision was brought in part by a desire to drive innovation, improve safety and security, and create a path for progress:
[](https://www.facebook.com/zuck/posts/pfbid02itnhhdmgBUikbLUEfTjncFqe2ho4p9oyLPfgjw9N4pthHCrigB8JSe3PEEhGVfh7l)
As Zuckerberg noted, PyTorch has been a largely successful open source project started by Meta as well.
#### [PyTorch](https://app.opensauced.pizza/s/pytorch/pytorch?range=180): Driven by Community Engagement
Initially developed by [Facebook’s AI Research lab](https://app.opensauced.pizza/workspaces/d35ff03b-13e2-43d8-9423-82f01db8200b), PyTorch is a machine learning library that can be used for things like image recognition and natural language processing. Its active community contributes to its development and supports each other through forums and collaborative projects.
The PyTorch community organizes regular events, workshops, and hackathons, which not only help in spreading knowledge but also in building a strong network of AI practitioners. This collaborative environment has led to rapid advancements and extensions and libraries that build on the core capabilities of PyTorch. Their daily increase in Stars and Forks also indicates sustained community engagement and interest.
#### The Impact of Community in Open Source AI
The open source AI community exemplifies the core principles of open source: transparency, collaboration, and shared growth. By involving the community and encouraging contributions, projects have not only advanced the field of AI but have also created an inclusive environment where we see continued innovation and growth.
## The Balancing Act: Governance vs. Openness
In Drive: The Surprising Truth about What Motivates Us, DH Pink identifies purpose as an intrinsic motivator. This means if we feel that our opinions and work matter, we’re more likely to be motivated. When we allow our community to contribute to the decision-making process, they feel a sense of belonging to the open source community.
Transparent decision-making and shared project roadmaps create psychological safety. Regular updates, open processes, and a common vision drive collective progress and innovation.
In [Evan You’s episode of the Secret Sauce](https://youtu.be/4_uYqae42uc?si=HUyoesl5jfY8KCcM), he talks about the responsibility of listening to the community and accounting for their feedback when making decisions: “So I am the BDFL [[Benevolent Dictator for Life](https://en.wikipedia.org/wiki/Benevolent_dictator_for_life)]. That's actually publicly stated in the governance documents in Vue. So I make the final calls. And if I want to, I can just say, this is the way we're going to go with. But if you look at our governance document, it's laid out in a way that says, okay, Evan is the project lead, Evan is the BDFL. He has the final call, but he has responsibility in listening to the feedback from community members and team members. I basically have the responsibility to make my best effort to take into account all the feedback from people who are stakeholders in the ecosystem. ”
Creating an environment where members feel safe to voice their opinions can build trust and cohesion. Request for Comments, or RFCs, are a great way to get the community involved.
### What is an RFC?
An RFC is a formal document - or more likely in the case of open source communities, an open issue or repository devoted to RFCs - that outlines proposed changes, features, or enhancements to a project. RFCs invite feedback, suggestions, and discussions from the community on significant changes before any final decisions are made.
#### Why RFCs are Important for Open Source Communities
1. Transparency: RFCs make the decision-making process open and visible, building trust as members see their input valued.
2. Collaboration: RFCs encourage community members to contribute ideas, leading to better solutions and implementations.
3. Inclusivity: RFCs create a sense of ownership and belonging, motivating members to contribute when their feedback has a tangible impact.
4. Quality Assurance: RFCs facilitate thorough review and discussion, identifying potential issues and improvements.
You can check out [Rust-langs RFC Repo](https://github.com/rust-lang/rfcs) to see their well-documented and thorough process for an RFC.
## Collaborative Decision-Making and Forking in Open Source
An empowered community also always has the option to leave a project if they feel the vision of the project has changed or they’re not being heard.This is a strength of open source: the option to take what you love and leave.
Kelsey Hightower discusses this in his Secret Sauce Episode as well: “So when you say, hey, add this feature, add this thing that doesn't make financial sense for us, we can say no. And now you have somewhere to go. There's forks. There's [a fork of Terraform](https://app.opensauced.pizza/s/opentofu/opentofu). There's [a fork of Vault](https://app.opensauced.pizza/s/openbao/openbao). And the community can choose to go that way ... The other part, though, is when we say open source, that little fourth button that's at the top of GitHub, that's what a community has got to put their money where their mouth is. So if you're complaining about the license change, That means you're willing to step up, right? Fork the project, rename it, and keep contributing in a way that adds value for 10 years. And if you're not going to be doing that, then the price and the license change is justified.”
### The Power of Forking
Forking is a fundamental part of open source that empowers communities to take control of their open source participation. When a significant portion of the community disagrees with the direction of a project, they have the option to fork the repository. Forking allows developers to implement their own vision and address issues they find critical, which might not align with the original project.
### The Balance of Community and Governance
While forking is a powerful tool, it also underscores the importance of balanced governance in open source projects. Effective governance structures that prioritize transparency, inclusivity, and responsiveness can decrease the need for forks by addressing community concerns proactively. Projects that successfully balance strong leadership with active community involvement tend to maintain cohesion and attract long-term contributors.
The option to fork a project reflects the strength and dynamic nature of open source communities. It ensures that the voices of contributors are heard and that the evolution of the project can continue even with disagreements.
## Final Thoughts
Open source communities are more than just a collection of contributors; they are dynamic ecosystems driven by shared goals, mutual support, and evolving motivations. These communities thrive on the principles of transparency, collaboration, and inclusivity, creating spaces where innovation happens and learning never stops.
But we have to acknowledge that these communities are not without their challenges. As we’ve seen, maintaining engagement, balancing governance with openness, and managing the diverse motivations of contributors are ongoing struggles. These challenges, however, are also opportunities. They push us to rethink how we create space for belonging, how we communicate, and how we make decisions.
The stories of contributors like Tyler Williams and the insights from Dave Kiss and Kelsey Hightower remind us that the strength of open source lies in its people. It’s in the willingness to mentor, the courage to fork a project, and the drive to contribute to something larger than oneself. These elements form the unseen currents that push open source forward.
As we look to the future, we must continue to invest in these communities—not just in terms of code, but in terms of human connection. We need to create environments where contributors feel valued, where their voices are heard, and where their contributions matter. This requires a delicate balance of governance and openness, a commitment to transparency, and a focus on building strong, supportive networks.
In the end, the true power of open source is not in the software itself, but in the community that builds it. By embracing this, we can navigate the challenges and cultivate thriving, resilient open source communities that drive innovation and make a lasting impact on the world.
| bekahhw |
1,886,041 | My First Arch Linux Installation | I post it originally on my personal blog and I recommend you read it there! During a specific... | 0 | 2024-06-12T18:07:49 | https://dev.to/dantas/my-first-arch-linux-installation-26le | archlinux, linux, beginners | - I post it originally on [my personal blog](https://www.dantas15.com/blog/first-arch-install/) and I recommend you read it there!
During a specific vacation from college, I figured I should try installing Arch Linux just because I was curious (and I wanted to say I use Arch btw).
## My expectations
- Learn! Since it's the first time I'm installing Arch Linux in a physical machine, I want to learn as much as I can, and write them down as much as possible
- Minimal installation
- Disk encryption
- Snapshots
### What you should expect (disclaimer)
This is not a tutorial (although I wrote it as a tutorial for me). This is just a report from my first time installing Arch in a physical computer.
You can use it as a kickstart for your own Arch install, or just see how I take notes.
Make sure to double check the information since they might not be completely up-to-date or outlined in a more simplistic way compared to the reality (always check the [Arch Wiki](https://wiki.archlinux.org/)).
Anyways, if you have any doubt or suggestions, make sure you [reach me](https://www.dantas15.com/contact).
## First things first
- [Download](https://archlinux.org/download/) the ISO
- Prepare an installation medium (I use [Ventoy](https://www.ventoy.net/en/index.html))
## Installation
You can change the keyboard layout as well. Layouts can be listed with:
```bash
localectl list-keymaps
```
Since my laptop is ABNT-2 (Brazil's default), I can change it with:
```bash
loadkeys br-abnt2
```
Also, this is completely optional, but I like to change the font:
```bash
setfont Lat2-Terminus16
```
### Network and Internet connection
<Callout>
In the installation image, [systemd-networkd](https://wiki.archlinux.org/title/Systemd-networkd "Systemd-networkd"),
[systemd-resolved](https://wiki.archlinux.org/title/Systemd-resolved "Systemd-resolved"), [iwd](https://wiki.archlinux.org/title/Iwd "Iwd") and
[ModemManager](https://wiki.archlinux.org/title/ModemManager "ModemManager") are preconfigured and enabled by default.
</Callout>
Since I was using wired connection, I didn't need to setup anything, but, if it's not your case (something's not right or you're using wireless connection, check [this](https://wiki.archlinux.org/title/Iwd#iwctl)).
- To test if you're connected to the internet, ping any website:
```bash
ping archlinux.org
```
### System clock
Now it's time to check if everything is right running `timedatectl`.
- You can list the timezones with:
```shell
timedatectl list-timezones
```
- Then you can select your timezone, for example `America/Sao_Paulo`:
```shell
timedatectl set-timezone America/Sao_Paulo
```
### Disk partitioning
- I strongly recommend you to disconnect other disks except for the one you'll be Installing Arch so you don't erase anything you didn't want to
- If there's any error, first check the [docs](https://wiki.archlinux.org/title/Installation_guide#Partition_the_disks) to see if any of the notes can help
- Identify the disk you'll be partitioning
```bash
fdisk -l
```
- I'll be using `/dev/sda/` but you should change it according to your case
- Use the `fdisk` specifying the disk
```bash
fdisk /dev/sda
```
- If the device does not contain a recognized partition table, `fdisk` [will automatically create a DOS (MBR) disklabel](https://unix.stackexchange.com/questions/685924/fdisk-output-new-dos-disklabel). Although it changes automatically to `gpt` once you create a GPT partition, you can already start the disk with GPT using the `-t` flag:
```bash
fdisk -t gpt /dev/sda
```
Assuming you're in fdisk:
- To create a [partition table](https://wiki.archlinux.org/title/Partitioning#Partition_table), type `g`
- Now in order to create the boot partition, now type `n`
- Select the first sector (kind of the starting point of the partition), the default (for the first partition) is 2048
- Select the last sector. There are a few tips on how to select them:
- Use the `+` symbol by the partition size
- The size can be specified in kibibytes (K), mebibytes (M), gibibytes (G), tebibytes (T), or pebibytes (P)
- Since it's the boot partition I'll set 1GiB with `+1G`
- The default type for newly created partitions is `Linux Filesystem`
- Since it's the boot partition, the type has to be changed. For that, type `t`
- Then specify the type (type `L` to list all available types)
- The `EFI System` type is `1`
- Repeat this process as needed in order to create the desired partitions
- Personally, I just create another partition with the rest of the available space (all defaults)
- When you finish creating the partitions, type `w` to write changes to the disk
Create a FAT 32 system on the EFI partition (in my casse it's `/dev/sda1`):
```bash
mkfs.fat -F 32 /dev/sda1
```
## System encryption
Initialize encryption on the Linux Filesystem partition. It'll prompt a password to encrypt your system:
```bash
cryptsetup -y -v luksFormat /dev/sda2
```
Map `/dev/sda2` to `/dev/mapper/cryptroot`:
```bash
cryptsetup open /dev/sda2 root
```
## BTRFS parititioning and Swapfile
Create BTRFS on the encrypted Linux Filesystem partition:
```bash
mkfs.btrfs /dev/mapper/cryptroot
```
Now mount it:
```bash
mount /dev/mapper/cryptroot /mnt
```
`cd` to `/mnt` and create the subvolumes [as recommended](https://wiki.archlinux.org/title/snapper#Suggested_filesystem_layout) for use with `snapper` (a program I found on Cody Hou's Arch installation, [reference](#reference) below):
```bash
cd /mnt
btrfs subvolume create @
btrfs subvolume create @home
btrfs subvolume create @snapshots
btrfs subvolume create @var_log
btrfs subvolume create @swap
```
Unmount `root` and remount the subvolumes and the boot partition. [noatime](https://opensource.com/article/20/6/linux-noatime) is used for better performance [zstd](https://github.com/facebook/zstd) as file compression:
```bash
cd
umount /mnt
mount -o noatime,compress=zstd,space_cache=v2,subvol=@ /dev/mapper/cryptroot /mnt
mkdir -p /mnt/{boot,home,.snapshots,var/log,swap}
mount -o noatime,compress=zstd,space_cache=v2,subvol=@home /dev/mapper/cryptroot /mnt/home
mount -o noatime,compress=zstd,space_cache=v2,subvol=@snapshots /dev/mapper/cryptroot /mnt/.snapshots
mount -o noatime,compress=zstd,space_cache=v2,subvol=@var_log /dev/mapper/cryptroot /mnt/var/log
mount -o noatime,subvol=@swap /dev/mapper/cryptroot /mnt/swap
mount /dev/sda1 /mnt/boot
```
- Make sure the swap subvolume is not being snapshoted.
Create a [swap file](https://wiki.archlinux.org/title/Btrfs#Swap_file). Change the `count` parameter in order to specify the size of the swap file:
```bash
cd /mnt/swap
chattr +C /mnt/swap
dd if=/dev/zero of=./swapfile bs=1M count=8192 status=progress
chmod 0600 ./swapfile
```
Now you can install the [essential packages](https://wiki.archlinux.org/title/Installation_guide#Install_essential_packages) in your system. (replace `intel-ucode` with `intel-ucode`if you're using an Intel processor):
```bash
pacstap -K /mnt base base-devel linux linux-firmware amd-ucode vim git networkmanager btrfs-progs dosfstools e2fsprogs exfat-utils ntfs-3g smartmontools dialog man-db man-pages texinfo pacman-contrib
```
## Configuring the system
### Fstab
Generate [fstab](https://wiki.archlinux.org/title/Fstab):
```bash
genfstab -U /mnt >> /mnt/etc/fstab
```
### Chroot
Change root into the system:
```bash
arch-chroot /mnt
```
### Time
Set the time zone accordingly (you can look in /usr/share/zoneinfo for your region and city):
```bash
ln -sf /usr/share/zoneinfo/America/Sao_Paulo /etc/localtime
```
Run `hwclock` to generate `/etc/adjtime`:
```bash
hwclock --systohc
```
### Localization
Edit `/etc/locale.gen` and uncomment the needed UTF-8 locales (In my case, I'll uncomment `en_US.UTF-8 UTF-8` and `pt_BR.UTF-8 UTF-8`):
```bash
vim /etc/locale.gen
```
After you uncomment the locales, you have to generate the locales:
```bash
locale-gen
```
Now you can create `/etc/locale.conf` file:
```bash
vim /etc/locale.conf
```
And set the LANG variable accordingly:
```bash
LANG=pt_BR.UTF-8
```
Also, if you're using a keyboard layout other than US, you might want to persist the current keyboard layout. In `/etc/vconsole.conf`:
```bash
KEYMAP=br-abnt2
```
### Network configuration
Set the hostname (name of your machine) by creating the `/etc/hostname` and adding the name of your hostname inside it.
Now, in order to prevent software unsafely resolving localhost over the network because they migh still read `/etc/hosts`, add the following entries to `/etc/hosts`:
```bash
127.0.0.1 localhost
::1 localhost
127.0.1.1 yourhostname
```
### User configuration
Create a root password:
```bash
passwd
```
Create your user with administrative privileges (the `-s` can be omitted as bash is the default shell). In my case, my username will be `gus`:
```bash
useradd -m -G wheel,rfkill -s /bin/bash gus
```
Specify the password for the created user:
```bash
passwd gus
```
In order to enable the recently created user to have administrative privileges (e.g. be able to use `sudo`), you'll need to uncomment the `wheel` line on:
```bash
EDITOR=vim visudo
```
If you want, you can specify the full user name with:
```bash
chfn -f "Gustavo Dantas" gus
```
### Initramfs
In `/etc/mkinitcpio.conf`, add `btrfs` to `MODULES`
Still in `/etc/mkinitcpio.conf`, make sure the `HOOKS` looks like the following
```
HOOKS=(base udev autodetect microcode modconf kms keyboard keymap consolefont block encrypt filesystems fsck)
```
- The order of the hooks matter, so make sure `block` and `encrypt` are before `filesystems`
Regenerate `initramfs`:
```bash
mkinitcpio -P
```
### Boot loader
You can use [grub](https://wiki.archlinux.org/title/GRUB) or [systemd](https://wiki.archlinux.org/title/systemd). I'll use grub because it enables more customization and there are some packages that allows restoring snapshots from the grub interface as well.
```bash
pacman -S grub efibootmgr
```
Generate the bootloader:
```bash
grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB
```
Now you need to obtain the UUID of the partition the system was installed:
```bash
blkid
```
- Use the UUID of the partition itself (in my case it's `/dev/sda2`, or if you're using NVME it should be something like `/dev/nvme0n1p2)`
Edit `/etc/default/grub` and at the line beginning with `GRUB_CMDLINE_LINUX_DEFAULT`, insert at the end with a space after quiet. Replace the content of `[UUID]` with the correspondent UUID of your system partition:
```bash
root=/dev/mapper/cryptroot cryptdevice=UUID=[UUID]:root
```
Regenerate `grub.cfg`:
```bash
grub-mkconfig -o /boot/grub/grub.cfg
```
Now it's time to add or configure additional software, like:
- Enabling networking on reboot:
```bash
systemctl enable NetworkManager.service
```
- Pacman cache clearner:
```bash
systemctl enable paccache.timer
```
- And if you're using SSD, enable TRIM:
```bash
systemctl enable fstrim.timer
```
It's time to exit chroot, reboot the system and remove the installation medium.
You should be prompted to enter the password of the encrypted partition right before loggin in.
- If what described above didn't happened, something not right happened along the process, like the UUID isn't correct.
- In this case, you should use your installation medium again, remount all the partitions and use [arch-chroot](#chroot) to fix this
## Snapshots
Install `snapper`:
```bash
sudo pacman -S snapper
```
When the snapshot configuration is created with `snapper`, it will also create a subvolume and a folder called `/.snapshots`, even thouth the `snapshots` subvolume was alreay created and mounted on `/.snapshots`
To fix this:
1. Unmount `snapshots` subvolume
```bash
sudo umount /.snapshots
```
2. Delete the `/.snapshots` folder
```bash
sudo rm -r /.snapshots
```
3. Create `snapper` config
```bash
sudo snapper -c root create-config /
```
- Check that snapper created the subvolume
```bash
sudo btrfs subvolume list /
```
4. Delete the newly created subvolume and folder
```bash
sudo btrfs subvolume delete /.snapshots
```
5. Create the `/.snapshots` folder again
```bash
sudo mkdir /.snapshots
```
6. Remount it to snapshots subvolume
```bash
sudo mount -a
```
Now give the right read, write and execute permissions to the snapshots:
```bash
sudo chmod 750 /.snapshots
```
Add your user to `ALLOW_USERS="yourusername"` in the snapper config at `/etc/snapper/configs/root`. You can also change the frequency and the history listed on the snapper [wiki page](https://wiki.archlinux.org/title/snapper#Set_snapshot_limits):
```bash
sudo vim /etc/snapper/configs/root
```
Enable the snapper services:
```bash
sudo systemctl enable --now snapper-timeline.timer
sudo systemctl enable --now snapper-cleanup.timer
```
### AUR helper
An [AUR helper](https://wiki.archlinux.org/title/AUR_helpers) automates the usage of the Arch User Repository (which is one of the great pros about using Arch really).
Even when I used Arch on WSL, I really liked [yay](https://github.com/Jguer/yay), because it's really fun to type :)
But you can also choose another one (like [paru](https://aur.archlinux.org/packages/paru) which is written in Rust), or if you're really going in Arch Linux way, get familiar with the [manual build process](https://wiki.archlinux.org/title/Arch_User_Repository#Installing_and_upgrading_packages)
Anyway, I'm installing `yay`. From the [docs](https://github.com/Jguer/yay?tab=readme-ov-file#installation):
```bash
pacman -S --needed git base-devel && git clone https://aur.archlinux.org/yay-bin.git && cd yay-bin && makepkg -si
```
In order to take a snapshot after every single install with pacman so you can revert if an upgrade breaks something, we can use `snap-pac-grub`.
But, because of the way the partitions were configured, the `/boot` is not being snapshotted, so in order to copy the files of `/boot` on every Linux kernel upgrade, `rsync` will be installed.
```bash
yay -S snap-pac-grub rsync
```
There's also the possibility to enable booting the snapshots from `grub`. For that, in `/etc/mkinitcpio.conf` add `grub-btrfs-overlayfs` to the end of `HOOKS`. And don't forget to regenerate your `initramfs`:
```bash
sudo mkinitcpio -P
```
### Kernel snapshots
As said above, the `/boot` is not being snapshotted, so if an update causes instability, you'll need to restore the older kernel image. For that:
1. Create the folder `/etc/pacman.d/hooks`
```bash
sudo mkdir /etc/pacman.d/hooks
```
2. In the recently created folder, create a hook that will sync `/boot` before a kernel upgrade
```bash
sudo vim /etc/pacman.d/hooks/0-bootbackup-preupdate.hook
```
```
[Trigger]
Operation = Upgrade
Operation = Install
Operation = Remove
Type = Path
Target = usr/lib/modules/*/vmlinuz
[Action]
Depends = rsync
Description = Backing up /boot before updating...
When = PreTransaction
Exec = /usr/bin/rsync -a --delete /boot /.bootbackup/preupdate
```
3. Duplicate the hook to copy the new kernel after updating
```bash
sudo cp /etc/pacman.d/hooks/0-bootbackup-preupdate.hook /etc/pacman.d/hooks/95-bootbackup-postupdate.hook
```
```
[Trigger]
Operation = Upgrade
Operation = Install
Operation = Remove
Type = Path
Target = usr/lib/modules/*/vmlinuz
[Action]
Depends = rsync
Description = Backing up /boot after updating...
When = PostTransaction
Exec = /usr/bin/rsync -a --delete /boot /.bootbackup/postupdate
```
Reboot the system.
Now make an image for rollback to the system as it is in case something goes wrong in the near future:
```bash
sudo snapper -c root create --description “Clean BTRFS install with Snapper”
```
## Conclusion
Of course, from here there are endless possibilities for the system to be configured and since I don't have a preference yet, I'll leave it up to your creativity.
But, if you're really curious about what I do from here, you can check my [dotfiles](https://github.com/dantas15/dotfiles).
That's it! Hope you enjoyed it. Please [contact](https://www.dantas15.com/contact) me if you have any suggestions, recommendations, tips, questions or if you just want to have philosophical conversations!
## Troubleshoot
- During the installation with `pacstrap`, I received some errors about someone's signature key `is unknown trust` or `invalid or corrupted package (PGP signature)`.
- I had to refresh the keys for it to work properly (this might take some time)
```bash
pacman-key --refresh-keys
```
## Reference
- [Arch Wiki](https://wiki.archlinux.org/) (In almost every section there are references to specific things that were being configured, make sure to check them as well)
- [Cody Hou's Arch installation with encrypt and swap](https://www.codyhou.com/arch-encrypt-swap/)
| dantas |
1,886,029 | Diferença entre os Operadores `??` e `||` em TypeScript | Quando se trata de fornecer valores padrão em TypeScript (ou JavaScript), os operadores ?? (Nullish... | 0 | 2024-06-12T18:05:29 | https://dev.to/vitorrios1001/diferenca-entre-os-operadores-e-em-typescript-2k6j | javascript, typescript, tutorial, programming | Quando se trata de fornecer valores padrão em TypeScript (ou JavaScript), os operadores `??` (Nullish Coalescing) e `||` (Logical OR) são frequentemente utilizados. No entanto, eles se comportam de maneira diferente quando lidam com valores falsy. Neste artigo, exploraremos as diferenças entre esses operadores e como utilizá-los em TypeScript.
## Operador Nullish Coalescing (`??`)
O operador `??` retorna o operando do lado direito quando o operando do lado esquerdo é `null` ou `undefined`. Caso contrário, ele retorna o operando do lado esquerdo.
### Exemplo:
```typescript
const foo: number | null = null;
const fooDefault = foo ?? 42;
console.log(fooDefault); // 42
const bar: string | undefined = undefined;
const barDefault = bar ?? 'default';
console.log(barDefault); // 'default'
const baz: number = 0;
const bazDefault = baz ?? 42;
console.log(bazDefault); // 0
const qux: string = '';
const quxDefault = qux ?? 'default';
console.log(quxDefault); // ''
```
Neste exemplo, o operador `??` retorna `'default'` ou `42` apenas quando o valor do lado esquerdo é `null` ou `undefined`. Para valores como `0`, `''` (string vazia), `false`, etc., ele retorna o valor do lado esquerdo.
## Operador Logical OR (`||`)
O operador `||` retorna o operando do lado direito quando o operando do lado esquerdo é um valor falsy. Os valores falsy em JavaScript e TypeScript incluem: `false`, `0`, `''` (string vazia), `null`, `undefined`, e `NaN`.
### Exemplo:
```typescript
const foo: number | null = null;
const fooDefault = foo || 42;
console.log(fooDefault); // 42
const bar: string | undefined = undefined;
const barDefault = bar || 'default';
console.log(barDefault); // 'default'
const baz: number = 0;
const bazDefault = baz || 42;
console.log(bazDefault); // 42
const qux: string = '';
const quxDefault = qux || 'default';
console.log(quxDefault); // 'default'
```
Neste exemplo, o operador `||` retorna `'default'` ou `42` para qualquer valor falsy do lado esquerdo, incluindo `0` e `''`.
## Diferença Chave
A principal diferença entre `??` e `||` é como eles tratam valores falsy:
- **`??` (Nullish Coalescing)**: Trata apenas `null` e `undefined` como valores falsy. Ideal para cenários onde você deseja tratar especificamente `null` e `undefined` e deixar outros valores falsy (como `0` ou `''`) passarem.
- **`||` (Logical OR)**: Trata todos os valores falsy (`false`, `0`, `''`, `null`, `undefined`, `NaN`) como valores falsy. Útil quando você quer fornecer um valor padrão para qualquer valor falsy.
## Exemplo de Uso em TypeScript
### Nullish Coalescing (`??`):
```typescript
function getUserInput(input: string | null | undefined): string {
const value = input ?? 'No input provided';
return value;
}
console.log(getUserInput(null)); // 'No input provided'
console.log(getUserInput(undefined)); // 'No input provided'
console.log(getUserInput('')); // ''
console.log(getUserInput('Hello')); // 'Hello'
```
### Logical OR (`||`):
```typescript
function getUserInput(input: string | null | undefined): string {
const value = input || 'No input provided';
return value;
}
console.log(getUserInput(null)); // 'No input provided'
console.log(getUserInput(undefined)); // 'No input provided'
console.log(getUserInput('')); // 'No input provided'
console.log(getUserInput('Hello')); // 'Hello'
```
## Conclusão
Os operadores `??` e `||` são úteis para fornecer valores padrão, mas têm comportamentos diferentes em relação a valores falsy. Use `??` quando quiser tratar especificamente `null` e `undefined`, e use `||` quando quiser tratar todos os valores falsy. Com essa compreensão, você pode escolher o operador adequado para suas necessidades de desenvolvimento em TypeScript.
### Artigo Relacionado
Para mais detalhes sobre como configurar e escrever testes unitários para serviços backend com dependências de banco de dados usando SQLite in-memory, confira o artigo completo no Dev.to:
[Como escrever testes unitários para serviços backend com dependências de banco de dados usando SQLite in-memory](https://dev.to/vitorrios1001/como-escrever-testes-unitarios-para-servicos-backend-com-dependencias-de-banco-de-dados-usando-sqlite-in-memory-4526) | vitorrios1001 |
1,886,040 | Asynchronous JavaScript: Practical Tips for Better Code | Asynchronous JavaScript can be a puzzle for many developers, specially when you are getting started!... | 0 | 2024-06-12T17:57:16 | https://dev.to/buildwebcrumbs/demystifying-asynchronous-javascript-practical-tips-for-better-code-15m1 | beginners, javascript, webdev, coding | Asynchronous JavaScript can be a puzzle for many developers, specially when you are getting started!
While it's a very impoerant piece of the language, enabling responsive, non-blocking interactions in web applications, it often causes confusion and bugs if not used correctly.
The goal of this article is to demystify asynchronous JavaScript and give you practical tips to write better, more efficient code.
---
## Explaining Asynchronous JavaScript
### Synchronous Execution: Waiting in Line at a Coffee Shop
Imagine you're in line at a busy coffee shop. Each customer ahead of you has to order, pay, and wait for their drink to be prepared before the next customer can start their order. This process is similar to **synchronous execution in programming**, where each task must be completed before the next one can begin.
Just as you must wait your turn before you can order your coffee, each line of code must wait for the previous line to finish executing before it can run.
This method ensures order and completeness but can be slow and inefficient if the tasks are lengthy.
### Asynchronous Execution: Dining at a Restaurant with Friends
Consider a scenario where you're at a restaurant with friends. Once you place your order with the server, you don't have to wait at the table doing nothing until your food arrives. Instead, you can chat with your friends, enjoy some appetizers, or sip on a drink. **This scenario resembles asynchronous execution in programming, where you can initiate a task and move on to other tasks without waiting for the first one to complete.**
In programming, this is akin to sending a request to a server and continuing to execute other code without blocking the main thread, improving the application's responsiveness and overall user experience.
### The Role of the Event Loop:
- JavaScript uses an event loop to handle asynchronous code.
This system works on a queue basis, processing an event only after the stack is clear of all other operations, managing multiple operations in a non-blocking manner.
---
**[Stay ahead with Webcrumbs: Subscribe to our newsletter for the latest updates and insider tips on JavaScript.](webcrumbs.org)**
---
## Common Asynchronous Patterns and Their Uses
**1. Callbacks:**
- Originally, asynchronous JavaScript was handled through callbacks. A callback is a function passed into another function as an argument to be executed later.
- **Example**:
```javascript
function getData(callback) {
fetchData(function(data) {
callback(data);
});
}
```
- **Callback Hell:** Too many nested callbacks can lead to complex and unmanageable code, often referred to as "callback hell." ⚠️Avoid it!
**2. Promises:**
- A Promise is an object representing the eventual completion or failure of an asynchronous operation.
- **Example**:
```javascript
fetchData().then(data => console.log(data)).catch(err => console.error(err));
```
- Promises simplify chaining asynchronous operations and improve error handling.
**3. Async/Await:**
- Async/Await makes your asynchronous code look and behave a bit more like synchronous code, which is easier to understand and manage.
- **Example**:
```javascript
async function loadData() {
try {
const data = await fetchData();
console.log(data);
} catch (err) {
console.error(err);
}
}
```
---
## Practical Tips for Writing Better Asynchronous JavaScript
**Best Practices with Async/Await:**
- Use `async/await` for clearer, more readable code.
- Handle errors with `try/catch` to manage exceptions gracefully.
**Error Handling:**
- Robust error handling is crucial in asynchronous programming. Always catch potential errors and handle them appropriately to prevent your application from crashing.
**Performance Considerations:**
- Be mindful of how you structure your asynchronous operations. Avoid unnecessary waits, and use parallel execution (`Promise.all`) where feasible to optimize performance.
---
### Tools and Resources
- **Chrome DevTools**: Excellent for debugging asynchronous JavaScript by stepping through the code.
- **Node.js Utilities**: Tools like `util.promisify` can convert callback-based functions to promise-based ones for easier use with async/await.
- **Linting Tools**: Tools like ESLint can help catch common errors in asynchronous code before they become a problem.
---
### Asynchronous JavaScript is cool 😎
Understanding and effectively implementing asynchronous JavaScript is key for developing responsive and efficient web applications.
Share your experiences or questions in the comments below, or on our community forum on Discord. Let's learn and grow together!
---
**[Join our vibrant community on Discord to connect with other JavaScript enthusiasts and get early insights into Webcrumbs.](https://discord.gg/4PWXpPd8HQ)**
--- | pachicodes |
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1,886,036 | Unlocking Data Relationships: MongoDB's $lookup vs. Mongoose's Populate | MongoDB Aggregation Framework - $lookup : $lookup is an aggregation pipeline stage in... | 0 | 2024-06-12T17:38:22 | https://dev.to/sujeetsingh123/unlocking-data-relationships-mongodbs-lookup-vs-mongooses-populate-mc5 | ## MongoDB Aggregation Framework - `$lookup` :
- `$lookup` is an aggregation pipeline stage in MongoDB that performs a left outer join to another collection in the same database. It allows you to perform a join between two collections based on some common field or condition.
- This stage is used within an aggregation pipeline to fetch related documents from another collection.
- It's quite flexible and allows for complex join conditions and aggregation operations.
- `$lookup` is more suitable for complex data manipulations and aggregations where you need to join data from multiple collections and perform computations.
```javascript
db.orders.aggregate([
{
$lookup: {
from: 'inventory',
localField: 'item',
foreignField: 'sku',
as: 'inventory_docs',
},
},
])
```
## populate (Mongoose ORM):
- populate is a feature provided by the Mongoose ODM (Object Data Modeling) for MongoDB.
- It allows you to automatically replace specified paths in a document with documents from other collections.
- It's a high-level abstraction provided by Mongoose to simplify working with related documents.
- populate is often used in the context of a schema definition in Mongoose to specify relationships between different collections.
- It automatically performs the necessary queries to fetch related documents and replaces the specified paths with these documents.
- It's commonly used in simpler scenarios where you just need to populate related documents while querying.
```javascript
const orderSchema = new mongoose.Schema({
item: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Inventory'
},
...
});
const Order = mongoose.model('Order', orderSchema);
Order.find({})
.populate('item')
.exec(function(err, orders) {
// Handle populated orders
});
```
## Comparison between `$lookup` and populate
When comparing the performance of \$lookup in MongoDB's aggregation framework versus populate in Mongoose, there are several factors to consider:
1. Query Complexity:
- \$lookup allows for more complex queries and aggregations, including conditions, transformations, and computations within the aggregation pipeline.
- populate is simpler to use and doesn't support as much complexity in terms of aggregation operations.
2. Efficiency:
- \$lookup operates directly on the MongoDB server side, so it can be more efficient for large datasets and complex operations.
- populate works at the application level, so it involves additional round trips between the application and the database server, potentially leading to higher latency, especially for large datasets or frequent queries.
3. Index Usage:
- Both \$lookup and populate can benefit from appropriate indexing on the fields used for joining documents.
- \$lookup can utilize indexes efficiently during the aggregation pipeline, optimizing the performance of the join operation.
- With populate, the efficiency of joins depends on how the data is structured and indexed, but it may not be as optimized as \$lookup since it's executed at the application level.
4. Data Volume:
- For small datasets or scenarios where only a few documents need to be joined, the performance difference between \$lookup and populate might not be significant.
- As the dataset grows larger or as the complexity of the operations increases, \$lookup might offer better performance due to its ability to leverage server-side resources and optimizations.
5. Caching:
- With populate, you have more control over caching strategies at the application level, which can help improve performance by reducing the number of database queries.
- \$lookup results are not cached by default within the aggregation pipeline, so if the same join operation is performed frequently with similar data, populate might have an edge if caching is effectively implemented.
In general, \$lookup tends to be more performant for complex aggregation operations and large datasets, especially when the operations can be optimized using indexes. However, for simpler scenarios or smaller datasets where convenience and simplicity are prioritized, populate might be more than sufficient and easier to work with despite potential performance trade-offs. | sujeetsingh123 | |
1,886,035 | Unlocking Data Relationships: MongoDB's $lookup vs. Mongoose's Populate | MongoDB Aggregation Framework - $lookup : $lookup is an aggregation pipeline stage in... | 0 | 2024-06-12T17:38:20 | https://dev.to/sujeetsingh123/unlocking-data-relationships-mongodbs-lookup-vs-mongooses-populate-lgk | ## MongoDB Aggregation Framework - `$lookup` :
- `$lookup` is an aggregation pipeline stage in MongoDB that performs a left outer join to another collection in the same database. It allows you to perform a join between two collections based on some common field or condition.
- This stage is used within an aggregation pipeline to fetch related documents from another collection.
- It's quite flexible and allows for complex join conditions and aggregation operations.
- `$lookup` is more suitable for complex data manipulations and aggregations where you need to join data from multiple collections and perform computations.
```javascript
db.orders.aggregate([
{
$lookup: {
from: 'inventory',
localField: 'item',
foreignField: 'sku',
as: 'inventory_docs',
},
},
])
```
## populate (Mongoose ORM):
- populate is a feature provided by the Mongoose ODM (Object Data Modeling) for MongoDB.
- It allows you to automatically replace specified paths in a document with documents from other collections.
- It's a high-level abstraction provided by Mongoose to simplify working with related documents.
- populate is often used in the context of a schema definition in Mongoose to specify relationships between different collections.
- It automatically performs the necessary queries to fetch related documents and replaces the specified paths with these documents.
- It's commonly used in simpler scenarios where you just need to populate related documents while querying.
```javascript
const orderSchema = new mongoose.Schema({
item: {
type: mongoose.Schema.Types.ObjectId,
ref: 'Inventory'
},
...
});
const Order = mongoose.model('Order', orderSchema);
Order.find({})
.populate('item')
.exec(function(err, orders) {
// Handle populated orders
});
```
## Comparison between `$lookup` and populate
When comparing the performance of \$lookup in MongoDB's aggregation framework versus populate in Mongoose, there are several factors to consider:
1. Query Complexity:
- \$lookup allows for more complex queries and aggregations, including conditions, transformations, and computations within the aggregation pipeline.
- populate is simpler to use and doesn't support as much complexity in terms of aggregation operations.
2. Efficiency:
- \$lookup operates directly on the MongoDB server side, so it can be more efficient for large datasets and complex operations.
- populate works at the application level, so it involves additional round trips between the application and the database server, potentially leading to higher latency, especially for large datasets or frequent queries.
3. Index Usage:
- Both \$lookup and populate can benefit from appropriate indexing on the fields used for joining documents.
- \$lookup can utilize indexes efficiently during the aggregation pipeline, optimizing the performance of the join operation.
- With populate, the efficiency of joins depends on how the data is structured and indexed, but it may not be as optimized as \$lookup since it's executed at the application level.
4. Data Volume:
- For small datasets or scenarios where only a few documents need to be joined, the performance difference between \$lookup and populate might not be significant.
- As the dataset grows larger or as the complexity of the operations increases, \$lookup might offer better performance due to its ability to leverage server-side resources and optimizations.
5. Caching:
- With populate, you have more control over caching strategies at the application level, which can help improve performance by reducing the number of database queries.
- \$lookup results are not cached by default within the aggregation pipeline, so if the same join operation is performed frequently with similar data, populate might have an edge if caching is effectively implemented.
In general, \$lookup tends to be more performant for complex aggregation operations and large datasets, especially when the operations can be optimized using indexes. However, for simpler scenarios or smaller datasets where convenience and simplicity are prioritized, populate might be more than sufficient and easier to work with despite potential performance trade-offs. | sujeetsingh123 | |
1,886,034 | Choosing the Right Database Solution for Your Project: SQL or NoSQL? | As a backend engineer tasked with setting up a new project, the question of whether to use a SQL or... | 0 | 2024-06-12T17:37:40 | https://dev.to/sujeetsingh123/choosing-the-right-database-solution-for-your-project-sql-or-nosql-2nno | As a backend engineer tasked with setting up a new project, the question of whether to use a SQL or NoSQL database invariably arises. Making this decision requires careful consideration of the project's specific requirements and needs.
When faced with the choice between SQL and NoSQL databases, several factors come into play.
1. **Data Structure**:
- **SQL**: Best for structured data with defined relationships.
- **NoSQL**: Ideal for unstructured or semi-structured data, offering flexibility.
2. **Scalability Requirements**:
- **SQL**: Typically vertically scalable, suitable for smaller-scale applications.
- **NoSQL**: Horizontally scalable, capable of handling large volumes of data and high traffic.
3. **Consistency vs. Flexibility**:
- **SQL**: Emphasizes ACID properties, ensuring data consistency.
- **NoSQL**: Offers eventual consistency, prioritizing flexibility and availability over strict consistency.
4. **Query Complexity**:
- **SQL**: Well-suited for complex queries and transactions.
- **NoSQL**: Primarily designed for simple read and write operations, may not support complex queries as efficiently.
5. **Development Speed**:
- **SQL**: Schema must be defined upfront, potentially slowing down development.
- **NoSQL**: Schema-less or flexible schema allows for quicker iterations and adaptation to changing requirements.
6. **Community and Ecosystem**:
- **SQL**: Mature ecosystem with robust tooling, support, and a large developer community.
- **NoSQL**: Diverse ecosystem with various database options catering to specific use cases, but may have less extensive tooling and support.
7. **Use Case**:
- **SQL**: Transactional applications, relational data, complex queries.
- **NoSQL**: Real-time analytics, caching, content management, IoT, and applications requiring flexible data models.
8. **Cost Considerations**:
- **SQL**: Generally, SQL databases may involve higher licensing costs, especially for enterprise-grade solutions.
- **NoSQL**: Many NoSQL options are open-source, offering cost savings, but consider factors like hosting, support, and scalability costs.
9. **Future Growth**:
- **SQL**: Consider whether your project may need to scale rapidly or evolve to handle unanticipated data types or volumes.
- **NoSQL**: Evaluate the ability of NoSQL solutions to accommodate future growth and changes in data requirements.
## Projects Suitable for SQL Databases:
1. **E-commerce Platforms**: SQL databases are well-suited for handling transactions, order management, and inventory tracking in e-commerce applications where data consistency is crucial.
2. **Customer Relationship Management (CRM) Systems**: SQL databases excel at storing and managing structured data related to customer interactions, sales pipelines, and marketing campaigns.
3. **Accounting and Financial Systems**: SQL databases are ideal for managing financial data with strict adherence to transaction integrity, ensuring accurate reporting and auditing capabilities.
4. **Human Resources Management Systems (HRMS)**: SQL databases are commonly used to store employee data, payroll information, and organizational hierarchies in HR management applications.
5. **Content Management Systems (CMS)**: SQL databases are suitable for storing and retrieving structured content, such as articles, images, and metadata, in CMS platforms.
## Projects Suitable for NoSQL Databases:
1. **Real-Time Analytics Platforms**: NoSQL databases, particularly columnar or document-oriented ones, are well-suited for ingesting and analyzing large volumes of semi-structured or unstructured data in real-time.
2. **IoT (Internet of Things) Applications**: NoSQL databases can efficiently handle the high volume and variety of data generated by IoT devices, supporting flexible schemas and horizontal scalability.
3. **Social Media and User-Generated Content Platforms**: NoSQL databases are commonly used to store and manage user profiles, social network graphs, and user-generated content due to their ability to handle variable data structures and high write throughput.
4. **Caching and Session Management Systems**: NoSQL databases, especially key-value stores like Redis, are effective for caching frequently accessed data and managing user sessions, offering low-latency access and high throughput.
5. **Graph Databases for Relationship Analysis**: NoSQL graph databases are suitable for applications requiring complex relationship analysis, such as social network analysis, recommendation engines, and fraud detection systems.
In conclusion, the choice between SQL and NoSQL databases ultimately depends on the specific needs and requirements of your project. SQL databases excel at handling structured data with complex relationships, ensuring data integrity and consistency, making them suitable for transactional systems and applications with demanding query needs. On the other hand, NoSQL databases offer greater flexibility, scalability, and agility, making them well-suited for projects dealing with unstructured or semi-structured data, real-time analytics, and applications requiring rapid iteration and adaptation to changing requirements. By carefully evaluating factors such as data structure, scalability, query complexity, development speed, and cost considerations, you can make an informed decision that aligns with the goals and objectives of your project, laying the foundation for its success. | sujeetsingh123 | |
1,886,032 | How can we version REST API? | API versioning is a critical aspect of software development, especially in the realm of web services.... | 0 | 2024-06-12T17:37:08 | https://dev.to/sujeetsingh123/how-can-we-version-rest-api-5eka | API versioning is a critical aspect of software development, especially in the realm of web services. As applications evolve and new features are introduced, maintaining backward compatibility becomes essential to ensure a seamless experience for existing users while allowing for innovation. In this blog post, we delve into the significance of API versioning, exploring its necessity and the various methods through which it can be implemented.
## Why do we need API versioning?
1. **Compatibility**: Different clients or services may rely on different versions of an API. Versioning ensures that updates don't break existing functionality for those using older versions.
2. **Flexibility**: Allows for the introduction of new features or changes without disrupting existing integrations.
3. **Deprecation**: Provides a structured approach for phasing out outdated functionality or endpoints.
4. **Client Control**: Allows clients to choose the version that best suits their needs, facilitating smoother transitions and updates.
5. **Documentation**: Helps maintain clarity and transparency regarding changes and updates, aiding developers in understanding how to interact with the API. I would recommend Swagger for API documentations.
## Start your API versioning
1. **Introducing Breaking Changes**: When making significant changes to an API that could break compatibility with existing clients or integrations, versioning allows for a smooth transition. This ensures that existing users can continue using the older version while new users or applications can adopt the updated version.
2. **Adding New Features**: When new features or functionality are added to an API, versioning allows developers to access these enhancements without disrupting existing implementations. Different versions of the API can coexist, enabling developers to adopt new features at their own pace.
3. **Bug Fixes and Maintenance**: Versioning provides a mechanism for applying bug fixes, performance improvements, and security patches to an API without affecting existing clients. By releasing updates under a new version, developers can ensure that changes are applied selectively and safely.
4. **Supporting Multiple Clients or Platforms**: In scenarios where an API serves multiple clients or platforms with varying requirements, versioning allows developers to tailor the API to specific needs. Different versions can offer different levels of functionality or support for legacy systems, ensuring compatibility across diverse environments.
5. **Deprecating Old Functionality**: Over time, certain features or endpoints of an API may become obsolete or redundant. Versioning allows developers to deprecate old functionality gradually, providing a transition period for users to migrate to newer alternatives.
6. **Managing Third-Party Integrations**: For APIs that are integrated with third-party services or partners, versioning ensures that changes to the API do not disrupt these integrations. By communicating version changes effectively, developers can minimize the impact on external stakeholders.
7. **Complying with Regulatory Requirements**: In regulated industries such as finance or healthcare, APIs must adhere to strict compliance standards. Versioning allows for controlled updates and ensures that changes do not violate regulatory requirements or compromise data security.
8. **Improving Developer Experience**: Versioning can enhance the developer experience by providing clear documentation, predictable release cycles, and a structured approach to API changes. This fosters collaboration, encourages innovation, and builds trust among API users.
## How can we version the API?
1. **URI Versioning**: Incorporating the version directly into the API endpoint URL.
Example:
```
https://api.example.com/v1/resource
https://api.example.com/v2/resource
```
2) **Query Parameter Versioning**: Specifying the version as a parameter in the API request.
Example:
```
https://api.example.com/resource?version=1
https://api.example.com/resource?version=2
```
3. **Header Versioning**: Passing the version information as part of the HTTP header.
Example:
```
GET /resource HTTP/1.1
Host: api.example.com
Accept: application/json
Api-Version: 1
```
4) **Media Type Versioning**: Utilizing different media types to represent different API versions.
Example:
```
Accept: application/vnd.example.v1+json
Accept: application/vnd.example.v2+json
```
5. **Custom Header Versioning**: Defining custom headers to convey version information.
Example:
```
GET /resource HTTP/1.1
Host: api.example.com
Accept: application/json
X-API-Version: 1
```
6) **Semantic Versioning (SemVer)**: Following a standardized versioning scheme based on major, minor, and patch updates.
Example:
```
GET /resource HTTP/1.1
Host: api.example.com
Accept: application/json
Api-Version: 1.0.0
GET /resource HTTP/1.1
Host: api.example.com
Accept: application/json
Api-Version: 2.0.0
```
In summary, API versioning is essential for managing the evolution of APIs, ensuring backward compatibility, and providing a seamless experience for developers and users alike. By adopting versioning best practices, organizations can maintain the stability, reliability, and longevity of their APIs while accommodating changing requirements and technological advancements.
| sujeetsingh123 | |
1,884,513 | You can't grow in your career without feedback. 🗣️ Here's 5 ways for you to find some 📝 | "This guy has 10 years of experience, but he works like a 4YOE one?" "How do I talk to my manager... | 0 | 2024-06-12T17:36:55 | https://dev.to/middleware/you-cant-grow-in-your-career-without-feedback-heres-5-ways-for-you-find-some-171p | career, beginners, learning, softwareengineering | **"This guy has 10 years of experience, but he works like a 4YOE one?"**
**"How do I talk to my manager about how I'm doing?"**
**"I don't know if I'm growing sufficiently in my career!"**
Ever said or wondered these things? Then you're in the right place.
---
There are tons of people out there who have worked since so long... Yet somehow there's not much of a difference between how they work and what they ship, compared to someone with much lower years of experience.
**It's because it's not the number of years you've worked that shows how far you've come. But the distance you've covered.**
_"Ooh that's deep."
Yes, I know. Thanks. 😂_
Devs find it easy to write code. To zone into a problem and focus on fixing that to the _best of their ability_.
Best of _their ability_.
**THEIR ABILITY.**
Where does "their ability" even come from?
It comes from the **learnings and growth they've acquired** over the years. It comes from working with others to see what they do better, or do differently and why. **It comes from receiving feedback** on the work they do themselves, learning what they did well, what they could do better, why, and how.
You could totally work in a silo, but unless you're an exception genius of some sort (or even if you are), you'll benefit a lot from obtaining feedback from those you work with.
> ### "Ah. I see. I'm ready for some feedback. But... how?"
Well, that's why you're here, aren't you?
Let's go.
## 1. Not all feedback is useful feedback.
_Funny how before I'm sharing how to get feedback, I'm sharing how NOT to get feedback. Or more like, how to ensure you have good feedback._
Everyone loves **sharing their experiences and opinions as solid fact**. They love to act like their way is the best way, and sometimes the only way of doing things.
If you ask around, you'll find people passionately defending their stance on whether a Pull Request should be merged via Merge Commits, Squashing, or Rebasing or something else. But these opinions are often not backed by sufficient or sound reasoning.
**Some examples of such feedback might be:**
* Don't use this library, write a util function instead.
* All your changes must have tests.
* Don't use list-comprehension. Use lambda functions instead.
* [Write your commits in this following structure.](https://dev.to/middleware/not-heres-how-to-write-actually-good-commit-messages-hint-its-not-just-adding-commit-lint-j2i)
I'm not saying this is BAD feedback. Maybe it isn't. But without elaborating further you wouldn't know. And it is common for especially new devs or introverts to NOT ask further questions.
When you request or are provided with feedback, whether it is on your [code reviews](https://dev.to/middleware/the-senior-engineers-guide-to-the-code-reviews-1p3b), task completion, planning, collaboration, etc. Always ask, "why?" (in an appropriate tone and politely of course).
**For each of the above pieces of feedback, here are some questions you might ask:**
* What risks do we face by using this library? It's open source, actively maintained, has a lot of stars. All good signs right?
* ALL my changes need to have tests? Why? That feels overkill and might cause my tasks to be delayed.
* But list-comprehension feels like a perfectly understandable way to write this code. I feel it's not really compromising readability either. Could you explain why I should be using lambda functions instead?
* Could you help me understand why I need to write my commits in this specific way? What problems might we face if I do XYZ instead?
When offered with some feedback, you absolutely need to understand why that feedback is valuable and applicable to you.
**Either convince, or get convinced.**
## 2. Don't wait for it. Ask for it.
Everyone has their own jobs to do, and sharing feedback often feels like something you have to go out of your way to do.
Well, you can't wait for it forever. Every month that passes by without feedback, you might be **ingraining the "bad practices"** harder. Doing things in a worse way without knowing. Not doing something that might benefit you significantly for low effort.
You'll figure most of it out eventually, often the hard way. But that's also a slower growth path.
**Ask your managers and some of your peers for feedback**, between once a month and once a quarter. Learn how they feel about working with you. What can you do better as a teammate? As a dev? As an employee of the org?
If your org already does regular review cycles, then you might not need to do this manually. But in most orgs, the review cycles are either insufficient, or non-existent.
**1:1s are a great way** to get some regular feedback from your managers, and they are more commonly done between 1-2 times a month. But again, 1:1s aren't done very constructively in way too many places. If you've ever felt like skipping a 1:1, then you're a victim of poorly structured 1:1s. _Maybe I'll write about that too soon._
## 3. Know where you want to go.
Most people have ambition. They want to be someone big, build big things, make big money, etc. And that's cool, obviously there's nothing wrong with that.
But whatever your goals are, have some level of clarity about them.
You don't need to have your whole life planned down to the moment. But **you should know who you want to be** and what you want to be doing in 5 years, and then 10.
**Why is this important?**
Because you'll receive all kinds of feedback, and people share feedback based on the things that are **important to THEM**.
Someone who intends to be a staff engineer someday might be highly focused on code/architecture/performance related feedback of your work. But if you intend to be a manager 5 years down the line, **the more relevant feedback** for you would be related to planning, collaboration, and high level design to some degree.
My last blog post might be relevant for SDE1/2's looking to grow in their careers:
{% embed https://dev.to/middleware/going-from-sde1-to-sde2-and-beyond-what-it-actually-takes-1cld %}
## 4. If you can't act on feedback, you might as well never have received it.
This means two things.
1. There's simply nothing you can or want to do about the feedback you received.
2. It isn't obvious, or you don't know how to can act on the feedback.
3. You straight-up forgot past feedback, or didn't make a plan of action.
**If any of this is true, you need to do something about it.**
**Let's start with feedback that is clear to you.**
If you know where you need to go, you know which feedback is going to be relevant, and if you don't actively act on such feedback then you're not really going to go anywhere.
**Track the feedback somewhere.**
It can be a spreadsheet, a document, some To-do app, or just a notes app. Log it down.
For each feedback item that you choose to track, you want to log the the following along with it:
* When was this **shared**
* What personal **goal** does it relate to
* When do you want to see the **results** of this
For example, if someone shared feedback with me stating that I should be more involved in the planning phase of new features, then I might log it down like:
| Feedback item | Goal | Shared | Target | Done |
|---------------------------------------------------|-------------|--------|--------|------|
| Actively participate in one feature planing phase | Being an EM | 10 May | 31 Jul | ✅ |
| Actively participate in 3 feature planning phases | Being an EM | 10 May | 30 Sep | |
**Coming to feedback that isn't obvious to you, either in terms of how you can act on it, or what the feedback actually means.**
Well, your only course of action here is to **ask**.
Ask for clarification on that feedback.
Ask for help with how you can work on it.
I understand depending on your work environment and culture, asking questions isn't always easy.
It's cool that you can often ask Google, or GPT about these things now, to some degree of success.
But... this highlights the last part, and a hard decision to make when it comes to feedback (or your career generally).
## 5. My work environment is straight-up not conducive for feedback.
I'm not going to pretend the whole world is utopian. There are places where your peers suck, your bosses suck, and everyone is too occupied in their own lives to care about you. After all, for someone to share meaningful feedback with you, they have to care about you in at least a professional capacity.
In such a scenario, maybe an option is to just... **leave?**
You should be at a job if you're getting at least 1 of the following:
1. Growth (personal/professional)
2. Money
3. Recognition
There isn't a "right answer" here. The right answer is **whatever you deem to be right**.
Feedback can play a crucial role in any, or even all of these, if acted upon properly.
But if there's no feedback, and you see no other reasonably fast path to any of this, then **don't remain stuck**. Keep moving. Keep growing. This post was basically about growing in your career. **Feedback is one of the most useful tools as your disposal.**
Seek it out. Use it.
---
**⛳️ Some background on this post:**
At this point I've worked at all kinds of places that have dealt with feedback in their own ways. Some made feedback a structured and regular thing, some others made it a more ad-hoc and casual thing, and sometimes there was hardly any feedback till it's been late.
Having deeply learnt the importance of feedback for myself and my peers the hard way, I decided to make sure there was a process and cadence to this chaos. I wouldn't say I practice this perfectly, else my team will have something to say about that. 🤣 But I'm sure they'll agree that we do a bunch of things right when it comes to feedback, and making sure they have a direction in which they can act in.
**We at [Middleware](https://www.middlewarehq.com/)** leverage feedback culture heavily! Make sure we have clearly set expectations from our roles, and are actively communicating differences and feedback clearly.
If this was interesting to you, you could check this post out, which was also linked above:
{% embed https://dev.to/middleware/going-from-sde1-to-sde2-and-beyond-what-it-actually-takes-1cld %} | jayantbh |
1,886,031 | The Evolution of Web Development: A 10-Year Retrospective | Responsive Design: Over the past decade, responsive design has become essential, allowing... | 0 | 2024-06-12T17:32:43 | https://dev.to/bingecoder89/the-evolution-of-web-development-a-10-year-retrospective-346p | webdev, javascript, frontend, beginners | 1. **Responsive Design**:
- Over the past decade, responsive design has become essential, allowing websites to adapt seamlessly to various screen sizes and devices, driven by the proliferation of smartphones and tablets.
2. **JavaScript Frameworks**:
- The rise of frameworks like Angular, React, and Vue.js has transformed front-end development, enabling more dynamic and interactive web applications with efficient component-based architectures.
3. **Progressive Web Apps (PWAs)**:
- PWAs have gained traction, offering app-like experiences on the web with offline capabilities, push notifications, and fast load times, bridging the gap between web and native apps.
4. **Single Page Applications (SPAs)**:
- SPAs, where the entire application runs on a single web page, have become popular for their fast, fluid user experiences, thanks to frameworks like React and Angular.
5. **Web Performance Optimization**:
- Emphasis on web performance has intensified, with techniques like lazy loading, code splitting, and the adoption of HTTP/2 to enhance page load times and user experience.
6. **APIs and Microservices**:
- The shift towards microservices and the extensive use of APIs have allowed for more modular and scalable backend architectures, facilitating seamless integration with third-party services.
7. **Serverless Architecture**:
- Serverless computing has emerged, enabling developers to build and deploy applications without managing server infrastructure, resulting in cost efficiency and scalability.
8. **Web Assembly (Wasm)**:
- Web Assembly has enabled near-native performance for web applications, allowing developers to run code written in multiple languages (e.g., C, C++) on the web at high speed.
9. **Enhanced Security Measures**:
- Increased focus on web security has led to widespread adoption of HTTPS, Content Security Policy (CSP), and other security protocols to protect against cyber threats.
10. **No-Code/Low-Code Platforms**:
- The advent of no-code and low-code platforms has democratized web development, allowing non-developers to create and deploy websites and web apps with minimal coding knowledge.
Happy Learning 🎉 | bingecoder89 |
1,886,030 | The Crucial Risk Assessment Template for Cybersecurity | Cybersecurity is everyone's business. Compliance requirements, investor demands, and data breaches... | 0 | 2024-06-12T17:32:28 | https://cynomi.com/blog/the-crucial-risk-assessment-template-for-cybersecurity/ | cybersecurity, risk | Cybersecurity is everyone's business. Compliance requirements, investor demands, and data breaches are just a few drivers pushing SMEs and startups to hire MSPs and cybersecurity consultants. Their InfoSec teams are often understaffed and fail to keep up with the shifting threat landscape and regulation.
Experiencing a successful data breach can effectively destroy a business, and breaches now cost companies an average of [$4.45 million](https://www.ibm.com/reports/data-breach) -- a sum that's increased by 15% over three years.
Estimating the likelihood of an end client falling victim to a successful data breach is no easy feat. A systematic and analytical approach is required to assess the cyber risk that can threaten their organization, and one way MSPs/MSSPs can accomplish this is by using a risk assessment template.
What is a Cybersecurity Risk Assessment Template?
-------------------------------------------------
A cybersecurity risk assessment (CSRA) or IT security risk assessment is a systematic process to identify, evaluate, and prioritize potential vulnerabilities in an organization's IT systems. Cybersecurity risk assessments are also part of the requirements for security measures in regulatory and industry standards such as [HIPAA](https://cybeready.com/category/the-infosec-guide-to-hipaa-compliance), ISO 27001, FISMA, NIST, SOC, and others.
From a service provider's perspective, a cybersecurity risk assessment is part of the onboarding process for new customers and a regular part of InfoSec operations that helps uncover gaps in a client's security posture. Cybersecurity risk assessments are invaluable in promoting a proactive approach to breach prevention and information protection, especially in highly regulated sectors like finance and healthcare.
[*Source*](https://www.alpinesecurity.com/blog/cybersecurity-risk-assessment-guide/)\
What threats does a cybersecurity risk assessment protect against?
--------------------------------------------------------------------
### Incompliance
Failure to comply with regulations and industry cybersecurity standards can create massive gaps in MSP/MSSP clients' cybersecurity postures, leading to regulatory fines and loss of [business revenue](https://www.cynomi.com/blog/https-www-cynomi-com-blog-6-ways-to-drive-mssp-msps-revenue/) for those who fail to adhere to the ever-changing requirements of regulators and cybersecurity leaders.
### Third-party Risk
From compromised open-source libraries used in corporate software to [SaaS misconfigurations](https://www.suridata.ai/blog/spotting-a-security-misconfiguration-vulnerability/), third-party vendors risk giving strangers unauthorized access to MSP/MSSP clients' potentially sensitive information.
### Poor Data Protection Measures
Gaps in sensitive data protection mechanisms and systems can expose customer data and sensitive information to third parties accidentally or maliciously.
Why do you need a cybersecurity risk assessment template?
---------------------------------------------------------
Using a comprehensive cybersecurity risk assessment template to customize the risk assessment process for your clients is a straightforward approach to quickly adding this service to your portfolio. The predefined structure of cybersecurity risk assessment templates also makes it easier to produce documentation and audit trails in formats required by regulators, like [security policies](https://www.cynomi.com/top-it-security-policies-to-implement-human-resources/). Plus, it facilitates effective communication of the risk assessment process through familiar report formats.
It's important to note that for your cybersecurity risk assessment template to remain relevant and effective, you must invest time and resources in continuously updating it in line with [future threats and vulnerabilities](https://www.cynomi.com/blog/https-www-cynomi-com-blog-security-predictions-2024/) and re-evaluating the score values assigned to certain risks or vulnerabilities in your template. This measure will enable you to offer your customers an up-to-date evaluation of their organizational attack surface and a comprehensive view of their cybersecurity risk posture.
[*Source*](https://pixelplex.io/blog/cybersecurity-risk-assessment/)
The Crucial Risk Assessment Template for Cybersecurity
-------------------------------------------------------
A robust risk assessment template is built as a categorized process that you should execute at regular intervals. It's worth noting that this template is not based on any particular cybersecurity framework or guidelines but rather provides a holistic step-by-step checklist for performing a crucial risk assessment. The steps are as follows:
### 1\. Describe the Purpose
The purpose of risk assessment is heavily affected by whether it is an *initial* or a *subsequent* assessment. For example, while an initial risk assessment aims to establish a baseline of cyber risk or identify cyber threats, a reassessment may be initiated as part of a risk response to re-evaluate the effectiveness of current security controls.
### 2\. Define the Scope
Before beginning any risk assessment process, you must set the boundaries and clearly define what is included. It entails identifying the systems, environments, software, hardware, cloud infrastructure, and processes that will be evaluated and audited for cyber security risk.
By clearly defining the scope of the cybersecurity risk assessment, you ensure that you effectively allocate resources to deliver valuable insights and actionable recommendations to stakeholders. Establishing the scope of the risk assessment process will also help determine the timeline and timeframe for its implementation.
### 3\. Inventory Relevant Assets and Resources
The next step entails compiling a comprehensive catalog of all the relevant resources and assets included in the scope of the risk assessment. These include hardware, software, devices, applications, user and machine accounts, plus third-party services that may have access to sensitive information (such as [payment card information](https://spectralops.io/blog/pci-compliance-levels-a-developers-guide-to-pci-compliance/), medical histories, personally identifiable information, etc).
You can prioritize each identified asset based on its importance to business operations and the potential fallout of its compromise to ensure effective resource allocation in mitigating potential risks to the critical business assets in the list.
Ensure you execute every step correctly by downloading the XLS risk assessment template.
### 4\. Evaluate the Threat Landscape
With a clear understanding of where the critical assets of the end client organization are and who can access them, it's time to map out the potential threats and systematic vulnerabilities that may pose a risk.
This part of the risk assessment template entails a comprehensive analysis of the potential risks that include (but are not limited to):
- Excessive access permissions
- Outdated IAM policies
- Unpatched software or firmware
- Reports of past risk events
- Threat information from cybersecurity vendors and industry groups.
[*Source*](https://www.imperva.com/learn/data-security/cybersecurity-risk-management/)
### 5\. Determine Compromise Likelihood and Impact Radius
With an extensive catalog of your clients' organizational assets and potential threats, you can begin to estimate the probability of attacks against them and the potential magnitude of the impact of a successfully exploited vulnerability.
At this stage, you can consider factors like threat actor sophistication, exploit availability, and the effectiveness of existing security controls to mitigate and minimize the damage of a threat event.
### 6\. Calculate and Assign Cyber Risk Scores
With the numerical values you've assigned to asset sensitivity, threat event probability, and the potential impact of these events, you can calculate a risk score that will assist you in the next step: vulnerability prioritization.
### 7\. Prioritize Vulnerability Mitigation
You likely have limited time, resources, and skills available at your disposal, so you must prioritize the most pressing issues and security gaps to address. In most cases, your team will want to start by highlighting and prioritizing the most critical and pressing issues uncovered in the cybersecurity risk assessment process and address them first.
### 8\. Develop a Risk Handling Plan
Cybersecurity risk is unlike other types of risk in business, and there are a few common ways to address it:
- Resolve it by implementing solutions and services to prevent the security event from occurring.
- Avoid it by removing the vulnerable component from the system in favor of a more secure alternative.
- Transfer the risk to another entity, such as an MSP or insurer.
- Accept the risk associated with the vulnerability discovered when other risk-handling avenues are unavailable, or the risk score is particularly low.
### 9\. Produce and Distribute a Cybersecurity Risk Assessment Report
The last part of your cybersecurity risk assessment process is gathering the necessary information, formatting it, and distributing it to the relevant stakeholders in your client's organization.
This stage includes comprehensive documentation of all findings and recommendations. It will enable you to communicate the results of your risk assessment to client decision-makers who support risk responses and share the relevant information with the right personnel.
Cynomi's Risk Assesment Proccess
--------------------------------
Cynomi's risk assessment is a sophisticated calculation done through assessments of multiple security domains and scoring based on each organization's unique security profile. Cynomi uses proprietary algorithms and adaptive tailor-made questionnaires to build a unique cybersecurity profile for each organization. The risk assessment process is highly customized to ensure it fits the specific organization.
Each organization's posture and risk are calculated based on that profile and compared to the desired posture of the specific organization, taking into account the organization's parameters and characteristics, including company size, industry, geographical location, regulations and frameworks to comply with, available assets, and many more.
In other words, each organization's posture is determined by comparing it to where it should be and not to where other organizations are (if you're a small healthcare clinic in NY, you should be measured differently than a large law firm from Dallas).
The result is an insightful dashboard that shows each organization's security posture, risk areas, and domains to focus on, as can be seen in the attached screenshot.
-----------------------------------------------------------------------------------------------------------------
*Cynomi Dashboard for Partners*
*Cynomi Policy for Partners*
--------------------------------------------------------------------------------------
*Cynomi Assessments Organised by Domain*
Automate Cybersecurity Risk Assessments at Scale With Cynomi's vCISO Platform
-----------------------------------------------------------------------------
A cybersecurity risk assessment template is a document that requires a lot of maintenance and customization for each of your clients and projects. It is a time-consuming challenge for InfoSec teams and the MSPs guiding them.
While there are advantages to using a familiar format like Excel for assessing cybersecurity risk, you should consider adopting an MSSP-centric platform like Cynomi that automates cybersecurity risk assessments and streamlines the process. Cynomi creates a unique cybersecurity profile per company, and uses adaptive, customized risk assessment questionnaires to automate the risk assessment process. It also leverages built-in scans to uncover critical vulnerabilities in externally visible IPs and URLs, including ports, protocols, encryption, and websites. Cynomi's vCISO platform acts as the one source of truth for each of your customers' risk assessment and augments the InfoSec team, enabling you to scale your InfoSec offering and demonstrate its value using your existing resources.
[Book a demo today](https://www.cynomi.com/request-a-demo/) to learn more about how MSPs and MSSPs use Cynomi to scale operations, reduce costs, and upsell effective and accurate InfoSec solutions to their customers. | yayabobi |
1,886,027 | Object methods 🦜 | let result; const userProfile = { username: 'Khojiakbar', age: 26, job:... | 0 | 2024-06-12T17:29:26 | https://dev.to/__khojiakbar__/object-methods-1j2j | javascript, object, methods | ```
let result;
const userProfile = {
username: 'Khojiakbar',
age: 26,
job: 'programmer',
city: 'Tashkent region',
}
```
```
// Object.keys()
result = Object.keys(userProfile);
// Object.values()
result = Object.values(userProfile);
// Object.entries()
result = Object.entries(userProfile) // returning nested array
// Object.fromEntries()
let fromEntries = Object.fromEntries(result)
console.log(result);
console.log(fromEntries);
```
```
// Object.freeze()
Object.freeze(userProfile);
// Add -
userProfile.weight = 80
// Modify -
userProfile.username = 'Bilol'
// Delete -
delete userProfile.city
// NO AMD
console.log(userProfile);
```
```
// Object.isFrozen()
result = Object.isFrozen(userProfile)
console.log(result);
```
```
// Object.seal()
result = Object.seal(userProfile);
// Add -
userProfile.weight = 80;
// Modify +
userProfile.age = 33;
// Delete -
delete userProfile.city;
// NO AD
console.log(userProfile);
```
```
// Object.isSealed()
result = Object.isSealed(userProfile)
console.log(result);
```
| __khojiakbar__ |
1,886,025 | 10 Essential Future Technology Books Every Developer Should Read | As the tech landscape evolves rapidly, developers must continuously enhance their skills and stay... | 0 | 2024-06-12T17:26:37 | https://dev.to/futuristicgeeks/10-essential-future-technology-books-every-developer-should-read-2okc | webdev, datascience, machinelearning, ai | As the tech landscape evolves rapidly, developers must continuously enhance their skills and stay updated with future technologies. Whether you’re a seasoned developer or just starting, the following ten books provide invaluable insights into machine learning, artificial intelligence, and other cutting-edge technologies of tomorrow.
1. “**Deep Learning**” by Ian Goodfellow, Yoshua Bengio, and Aaron Courville
2. “**Pattern Recognition and Machine Learning**” by Christopher M. Bishop
3. “**Machine Learning: A Probabilistic Perspective**” by Kevin P. Murphy
4. “**Artificial Intelligence: A Modern Approach**” by Stuart Russell and Peter Norvig
5. “**Hands-On Machine Learning with Scikit-Learn, Keras, and TensorFlow**” by Aurélien Géron
**Read the complete list of books with more details here:**
https://futuristicgeeks.com/10-essential-future-technology-books-every-developer-should-read/ | futuristicgeeks |
1,885,944 | From Manual Drudgery to Automation Maestro: Mastering Ansible with Docker | This blog post whisks you away from the drudgery of manual server configuration and into the... | 0 | 2024-06-12T17:24:57 | https://dev.to/sandheep_kumarpatro_1c48/from-manual-drudgery-to-automation-maestro-mastering-ansible-with-docker-10m5 | This blog post whisks you away from the drudgery of manual server configuration and into the empowering realm of automation with Ansible ✨. Ever feel like a rockstar chef , forced to hand-chop every veggie , meticulously measure spices ⚖️, and build the fire from scratch for every dish? That's exactly how I felt when manually configuring servers!
Fear not, fellow automation enthusiasts! Ansible, a powerful configuration management tool, offers the perfect recipe for automation mastery . This blog post equips you with the knowledge to set up a local Ansible environment using Docker, creating your own personal automation playground .
**Why Learn Ansible?**
Two main reasons fueled my Ansible learning adventure:
1. **Local Setup Automation:** My exploration of various Linux distributions for my ideal setup often left me yearning for a quick way to revert back to a familiar configuration. Ansible swooped in like a knight in shining armor ️️, allowing me to automate this process and regain my preferred environment in a flash ⚡️.
2. **Remote Server Automation:** Recently, I had the opportunity to set up a server and a CI/CD pipeline. This involved a lot of repetitive tasks like installing OS-specific packages , configuring reverse proxies , generating SSH keys , and setting up local repositories. Ansible offered a way to automate these pre-project tasks, streamlining the development process . Remember, with automation comes efficiency, but it's always wise to be aware of potential "thorns" (errors or unexpected behavior) that may arise.
**Why Choose a Local Setup Over the Cloud? ☁️**
While cloud platforms like AWS offer readily available resources and online tutorials, I opted for a local setup. This decision, though requiring more effort, provided valuable hands-on experience, particularly with SSH . This knowledge will undoubtedly prove beneficial in the long run .
**Prerequisites **
- **Docker:** [https://www.docker.com/](https://www.docker.com/)
- **Text Editor:** While options like VS Code, Neovim, and Zed are popular choices, even a simple text editor like Notepad will work. The magic happens in the terminal! 🪄
**Folder Structure**
```bash
Learn-Ansible/
│ ├── hosts
│ └── playbooks/
│ ├── ping.yml
│ ├── gather_facts.yml
│ ├── log_os.yml
│ ├── run_all.yml
│ ├── Dockerfile (Optional: Create a custom Ansible Docker image)
│ ├── docker-compose.yml (Optional: Manage all Docker services with a single command)
# and so on…
```
**Demystifying the Folder Structure: Your Roadmap to Ansible Automation**
Now that you're fired up about conquering automation with Ansible and Docker, let's navigate the folder structure that will be your roadmap to success. Think of it as a well-organized kitchen - everything has its designated place, making it easy to find the ingredients (playbooks) you need to whip up automation magic ✨.
**The Root of Automation: Learn-Ansible**
This is the main directory that will house all your Ansible goodies. Imagine it as your well-stocked pantry, brimming with the potential to automate various tasks.
**Essential Ingredients: The hosts file**
Inside `Learn-Ansible`, you'll find the `hosts` file. This is where you'll define the servers or systems Ansible will manage, like your trusty kitchen appliances (your laptop, server, etc.). Each server can be listed with its hostname or IP address, allowing Ansible to identify and configure them.
**The Recipe Box: The playbooks Directory**
This is the heart of your automation kitchen! Here, you'll create Ansible playbooks - essentially your recipes - that outline the specific tasks you want Ansible to perform on your managed servers. Each playbook is typically a YAML file (think recipe instructions!), detailing the steps to configure software, manage files, or execute commands.
We'll delve deeper into creating playbooks in the next section, but for now, understand that this is where the magic happens!
**Enough of storytelling, let's get into code now!**
Now that we've explored the why and the how behind using Docker for a local Ansible setup, let's dive into the code itself. We'll cover three main parts:
1. Local Setup with Dockerfile and generating docker image using `docker build`
2. Creating a container using the image generated in the previous step using `docker-compose`
3. Playing with Ansible.
**Local Setup with Dockerfile**
```Dockerfile
# Use the official image as a parent image
FROM ubuntu
# Update the system, install OpenSSH Server, and set up users
RUN apt-get update && apt-get upgrade -y && \
apt-get install -y openssh-server && apt-get install sudo -y && apt-get install sshpass -y
# Create user and set password for user and root user
RUN useradd -rm -d /home/ubuntu -s /bin/bash -g root -G sudo -u 1000 ubuntu && \
echo 'ubuntu:your_secret_password_here' | chpasswd && \
echo 'root:your_secret_password_here' | chpasswd
# Set up configuration for SSH
RUN mkdir /var/run/sshd && \
sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config && \
sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd && \
echo "export VISIBLE=now" >> /etc/profile
# Expose the SSH port
EXPOSE 22
# Run SSH
CMD ["/usr/sbin/sshd", "-D"]
```
**Full on explanation of the `Dockerfile `**
The provided `Dockerfile` defines a custom Docker image specifically tailored for running Ansible within a container. Here's a breakdown of the code:
**1. Base Image:**
Dockerfile
```Dockerfile
FROM ubuntu
```
This line sets the foundation for our image by using the official `ubuntu` image from Docker Hub. This image provides a base Linux environment with essential packages pre-installed.
**2. System Updates and Package Installation:**
```Dockerfile
RUN apt-get update && apt-get upgrade -y && \
apt-get install -y openssh-server sudo sshpass
```
This block of code performs several actions:
- `apt-get update`: Updates the list of available packages from the repositories.
- `apt-get upgrade -y`: Upgrades all installed packages to their latest versions (the `-y` flag skips confirmation prompts).
- `apt-get install -y openssh-server sudo sshpass`: Installs three crucial packages:
- `openssh-server`: Enables SSH server functionality within the container, allowing you to connect remotely.
- `sudo`: Provides elevated privileges for executing commands with administrative rights.
- `sshpass`: A tool that allows you to specify the SSH password on the command line, simplifying automation.
**3. User Creation and Password Setup:**
```Dockerfile
RUN useradd -rm -d /home/ubuntu -s /bin/bash -g root -G sudo -u 1000 ubuntu && \
echo 'ubuntu:your_sudo_password_here' | chpasswd && \
echo 'root:your_sudo_password_here' | chpasswd
```
This section creates two users:
- `ubuntu`: This user will be used for interacting with the container.
- `-rm`: Removes the user upon container termination.
- `-d /home/ubuntu`: Sets the home directory for the user.
- `-s /bin/bash`: Defines the default shell for the user (bash).
- `-g root -G sudo`: Assigns the user to the `root` and `sudo` groups, granting administrative privileges.
- `-u 1000`: Sets the user ID (UID) to 1000 (commonly used for the `ubuntu` user).
- `root`: The root user is also created and assigned the same password as the `ubuntu` user. **Note:** It's generally not recommended to run as root within containers for security reasons.
**4. SSH Configuration:**
```Dockerfile
RUN mkdir /var/run/sshd && \
sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config && \
sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd && \
echo "export VISIBLE=now" >> /etc/profile
```
These commands configure the SSH server within the container:
- `mkdir /var/run/sshd`: Creates the directory required by the SSH daemon.
- `sed`: A command-line tool for text manipulation. Here, it modifies two files:
- `/etc/ssh/sshd_config`: This file controls the SSH server behavior. The `sed` command replaces the line `PermitRootLogin prohibit-password` with `PermitRootLogin yes`, allowing root login via SSH (**caution: use with care!**).
- `/etc/pam.d/sshd`: This file defines the authentication process for SSH. The `sed` command modifies a line related to the `pam_loginuid.so` module, potentially simplifying login for automation scripts (consult the documentation for details).
- `echo "export VISIBLE=now" >> /etc/profile`: This line adds an environment variable to the user's profile, potentially aiding graphical applications within the container (consult the documentation for specific use cases).
**5. Exposing the SSH Port:**
```Dockerfile
EXPOSE 22
```
This line exposes port 22 (the standard SSH port) of the container. This allows you to connect to the container using SSH from your local machine.
**6. Running the SSH Daemon:**
```Dockerfile
CMD ["/usr/sbin/sshd", "-D"]
```
This line sets the default command for the container. It executes the SSH daemon (`/usr/sbin/sshd`) with the `-D` flag, which enables background mode, keeping the container running even after you disconnect from the SSH session.
>**Why Dockerfile? Why not the ubuntu image itself?**
>
>The base Ubuntu image might lack specific packages required for your Ansible workflow. The provided Dockerfile addresses this by installing essential tools:
>- `openssh-server`: Enables SSH functionality within the container for remote management.
>- `sudo`: Grants elevated privileges for administrative tasks often needed by Ansible.
>- `sshpass`: Simplifies automation by specifying the SSH password on the command line.
>
>Additionally, a Dockerfile allows you to create a new user specifically for your experiments (e.g., `ubuntu` in this case). This dedicated user serves as your primary point of interaction within the container for running Ansible playbooks and managing configurations.
>
>In essence, a Dockerfile provides greater control, ensures the necessary tools are present, and creates a clean environment for your Ansible automation endeavors.
**Creating an SSH Accessible Ubuntu Container with Docker Compose**
This guide details the process of setting up an Ubuntu container accessible via SSH using Docker Compose.
**Prerequisites:**
- Docker installed and running on your system.
**Steps:**
**1. Define the Docker Compose configuration:**
Create a file named `docker-compose.yml` with the following content:
```yaml
version: "3.8"
services:
ubuntu-ssh:
image: ubuntu-ssh
container_name: ansible-node
ports:
- "2222:22"
```
- This configuration defines a service named `ubuntu-ssh` that utilizes the `ubuntu-ssh` image.
- The container will be named `ansible-node`.
- Port 2222 on the host machine is mapped to port 22 (default SSH port) inside the container, allowing remote access.
**2. Start the container:**
Open a terminal and navigate to the directory containing the `docker-compose.yml` file. Run the following command:
```bash
docker-compose up -d
```
- This command instructs Docker Compose to build and start the container in detached mode (`-d`).
**3. Connect to the container:**
Use the following command to establish an SSH connection to the container:
```bash
ssh -o PubkeyAuthentication=no ubuntu@localhost -p 2222
```
- **Explanation:**
- `ssh`: Initiates the SSH connection.
- `-o PubkeyAuthentication=no`: Disables public key authentication (more secure methods attempted by default).
- `ubuntu@localhost`: Specifies the username (`ubuntu`) and hostname (`localhost`).
- `-p 2222`: Defines the port number (`2222`) for the connection.
**Buckle up**, Ansible adventurer! Prepare to unleash your automation superpowers in this **glorious** Ansible playground! Get ready to conquer mountains of tasks and wrestle servers to the ground (with love, of course) This is your personal Ansible bootcamp, where the learning is **epic** and the possibilities are **endless**
**Wanna install anisble?**
```shell
pip install ansible
```
Though i have provided a very simple way to install ansible, it's always good to know [other ways to install ansible](https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html).
**Demystifying Ansible: A Glossary for Automation Ninjas**
As we've explored Ansible's capabilities, you might be itching to dive into automation headfirst. But to ensure your automation journeys are smooth sailing, let's solidify your understanding of some key Ansible terms.
- **Tasks: Your Automation Arsenal**
- Think of tasks as the building blocks of automation. They represent specific actions like installing software packages, cloning Git repositories, configuring shells, or creating sudo users.
- **Plays: Orchestrating Your Automation Symphony**
- Plays are individual automation routines that group related tasks. They define a specific set of actions to be performed on your target systems.
- **Playbooks: The Blueprint for Automation Success**
- Playbooks are the heart of Ansible automation. These YAML files act as scripts, meticulously laying out the plays and tasks to be executed in a precise sequence.
- **Inventory Files: Defining Your Automation Landscape**
- The inventory file, often referred to as the `hosts` file, is your map to the target servers. It stores information about the machines where your automation magic will take place. Imagine this file as your target list for automation missions.
**Inventory File Example: Deciphering the Code**
Here's a breakdown of a sample `hosts` file, showing the details for a server named `node1`:
```Ini
# learn-ansible/hosts
node1 ansible_user=ubuntu ansible_host=localhost ansible_port=2222 ansible_password=your_secret_password_here ansible_ssh_common_args='-o PubkeyAuthentication=no' ansible_become_pass=your_secret_password_here
```
- **`node1`:** This is an alias, a friendly name for your server in the playbooks. It makes your automation scripts easier to read and maintain.
- **`ansible_user=ubuntu`:** This specifies the username "ubuntu" for SSH connections to the server represented by the alias `node1`.
- **`ansible_host=localhost`:** This targets the machine running Ansible itself (replace with the actual server hostname if it's not localhost).
- **`ansible_port=2222`:** This tells Ansible to connect to port 2222 for SSH instead of the default port 22.
- **`ansible_password=your_secret_password_here`:** This provides the password for authentication as the "ubuntu" user on the server.
- **`ansible_ssh_common_args='-o PubkeyAuthentication=no'`:** This disables public key authentication, forcing password-based authentication for this specific server.
- **`ansible_become_pass=your_secret_password_here`:** This provides the password for privilege escalation using `sudo` commands on the server.
**Playbook File Example: Putting Automation into Action**
This sample playbook demonstrates how to install specific software and configure the default shell on the `node1` server.:
```yml
# learn-ansible/playbook/install_playbook.yml
---
- name: Play for installing curl, zsh, python and pip
hosts: node1
gather_facts: false
tasks:
- name: Install curl
ansible.builtin.apt:
name: curl
state: present
- name: Install zsh, python and pip
ansible.builtin.apt:
name:
- zsh
- python3
- python3-pip
state: present
- name: Play for choosing zsh as default shell
hosts: node1
gather_facts: false
tasks:
- name: Choose zsh as default shell
ansible.builtin.user:
name: ubuntu
shell: /bin/zsh
become: true
```
**Playbook (YAML: ` - -`)**
Imagine a playbook as the architect's blueprint for your automation project. It's a YAML file that meticulously outlines the entire automation sequence. This file serves as the central command center, dictating the plays, tasks, and target systems involved in your automation mission.
```
---
# This line signifies the start of the YAML document
```
**Play (YAML: Indented Block)**
Think of a play as an individual act within your automation play (just like a play in a theatrical production). Each play groups related tasks that target specific goals. You can have multiple plays in a single playbook, allowing you to tackle different automation objectives in a structured manner.
Here's an example play from the sample playbook:
```yml
- name: Play for installing curl, zsh, python and pip # Play definition with a descriptive name
hosts: node1 # This targets the server aliased as 'node1' in your hosts file
gather_facts: false # Optional, skips information gathering
tasks: # This indented block contains all tasks for this play
# ... task definitions ... (explained later in Tasks section)
```
**Tasks (YAML: Further Indented Block)**
Tasks are the fundamental building blocks of automation within a play. They represent specific actions to be executed on the target system. A play can have numerous tasks strung together in a particular order to achieve the desired outcome. These tasks are like the individual instructions an actor follows on stage to bring the play to life.
Here's an example task definition within a play:
```yml
tasks:
- name: Install curl # Task definition with a descriptive name
ansible.builtin.apt: # The module used for package management
name: curl # The specific package to install
state: present # Desired state (ensure curl is installed)
```
**Efficiently Manage Multiple Servers with Ansible Inventory Groups**
Ansible empowers you to automate tasks across numerous servers simultaneously. This guide demonstrates how to achieve this using inventory groups within your Ansible configuration.
**Grouping Servers for Simplified Management**
**1. Inventory File:**
- Edit your Ansible inventory file (`hosts` by default).
- Define groups to categorize your servers logically. For instance, create a group named `group1` to encompass servers `node1` and `node2`.
```ini
[group1]
node1 ansible_user=ubuntu ansible_host=localhost ansible_port=2222 ansible_password=your_secret_password_here ansible_ssh_common_args='-o PubkeyAuthentication=no' ansible_become_pass=your_secret_password_here
node2 ansible_user=ubuntu ansible_host=localhost ansible_port=2223 ansible_password=your_secret_password_here ansible_ssh_common_args='-o PubkeyAuthentication=no' ansible_become_pass=your_secret_password_here
```
**2. Playbook Targeting Groups:**
- Modify your Ansible playbook to target the newly created group.
```yml
---
- name: Install curl, zsh, Python, and pip
hosts: group1
gather_facts: false
tasks:
# ... your Ansible tasks here
```
- The `hosts: group1` line specifies that this play should execute on all servers within the `group1` group.
**Scaling with Multiple Groups**
- Create additional groups in your inventory file to organize more servers.
- Update your playbooks to target multiple groups using a colon (`:`) separator.
```yml
---
- name: Install software across all servers
hosts: group1:group2
gather_facts: false
tasks:
# ... your Ansible tasks here
```
- This playbook will execute on all servers in both `group1` and `group2`.
Now the final step, run the code in the terminal
```shell
# pwd :- learn-ansible
ansible-playbook -i hosts playbooks/install_playbook.yml
```
**Next Blog comming soon on unit testing** | sandheep_kumarpatro_1c48 | |
1,886,024 | MongoDB Query Operators: $and, $or, $exists, $type, $size | When working with MongoDB, understanding various query operators is crucial for efficient data... | 0 | 2024-06-12T17:22:54 | https://dev.to/kawsarkabir/mongodb-query-operators-and-or-exists-type-size-1lnp | When working with MongoDB, understanding various query operators is crucial for efficient data retrieval. This article will dive into the usage of some fundamental operators like `$and`, `$or`, `$exists`, `$type`, and `$size`.
## $and Operator
Let's say we have a database named `school` with a `students` collection. We want to retrieve students whose age is not 5 and less than 10. This can be done in two ways:
```javascript
db.students
.find({ age: { $ne: 5, $lt: 10 } })
.project({ age: 1 })
.sort({ age: 1 });
db.students
.find({ $and: [{ age: { $ne: 5, $lt: 10 } }] })
.project({ age: 1 })
.sort({ age: 1 });
```
In the first example, we implicitly combine conditions within a single field. In the second, we explicitly use the `$and` operator. Both queries search for documents where the age is not 5 and is less than 10, then project only the age field and sort the results in ascending order.
## $or Operator
The `$or` operator works oppositely to `$and`, meaning it returns documents that satisfy at least one of the conditions. While no new example is provided, it operates similarly to `$and`, combining conditions but returning results if any condition is true.
## $exists Operator
The `$exists` operator checks the presence or absence of a field. For instance, to find students who do not have an age property or an email property:
```javascript
db.students.find({ age: { $exists: true } });
db.students.find({ age: { $exists: false } });
```
- `$exists: true` returns documents with the `age` field present.
- `$exists: false` returns documents without the `age` field.
Note that `$exists` only checks for the presence of the field, not its value.
## $type Operator
The `$type` operator allows us to query documents based on the data type of a field's value. For example, to find students where the `age` field is stored as a string:
```javascript
db.students.find({ age: { $type: "string" } });
```
## $size Operator
The `$size` operator is used to query arrays by their size. For example, to find documents where the `friends` array is empty:
```javascript
db.test.find({ friends: { $size: 0 } });
```
**Note:** The `$size` operator only works with array fields.
## Conclusion
These operators—`$and`, `$or`, `$exists`, `$type`, and `$size`—are essential tools for querying MongoDB collections. Understanding their usage can significantly enhance your ability to retrieve and manipulate data efficiently. Whether you're filtering documents based on multiple conditions, checking for the presence of fields, or querying specific data types and array sizes, these operators provide powerful capabilities for precise data management. | kawsarkabir | |
1,886,022 | American University Of Business And Social Sciences Confers Doctor Of Business Management (Honoris Causa) On Hiew Boon Thong | The American University of Business and Social Sciences (AUBSS) is honored to announce the conferment... | 0 | 2024-06-12T17:21:06 | https://dev.to/aubss_edu/american-university-of-business-and-social-sciences-confers-doctor-of-business-management-honoris-causa-on-hiew-boon-thong-2aph | education, aubss, qahe, research | The American University of Business and Social Sciences (AUBSS) is honored to announce the conferment of the prestigious Doctor of Business Management (Honoris Causa) degree on Mr. Hiew Boon Thong. This honorary doctorate is awarded in recognition of Mr. Hiew’s outstanding accomplishments and exemplary contributions to society.
Mr. Hiew Boon Thong is an exceptional individual whose illustrious career and dedication to service have left an indelible mark. With over 36 years of distinguished service in the Royal Malaysian Police Force, he rose to the rank of Assistant Superintendent of Police, earning numerous accolades and awards for his exceptional performance and leadership.
Following his retirement from the police force, Mr. Hiew transitioned into the corporate world, showcasing his business acumen as the Managing Director of two prominent local oil palm companies. Alongside his professional achievements, Mr. Hiew has been a driving force in religious and social activities, organizing large-scale Buddhist events and serving as the Founder and Chairman of several Buddhist associations in Malaysia.
Mr. Hiew’s commitment to lifelong learning is truly inspiring. He holds two prestigious doctorate degrees, a Doctorate in Business Administration (DBA) and a Professional Doctorate (PD) in Buddhist Studies, as well as two Master’s degrees in Business Administration and Buddhist Studies. Currently, he is pursuing his third Doctorate degree in Business Administration and a third Master’s degree in Buddhist Studies, demonstrating his unwavering dedication to personal and intellectual growth.
About the American University of Business and Social Sciences (AUBSS):
The American University of Business and Social Sciences (AUBSS) is a leading global institution dedicated to providing high-quality education in business, management, and social sciences. AUBSS is committed to fostering a dynamic learning environment that prepares students for success in the ever-evolving business landscape. | aubss_edu |
1,885,958 | The Ultimate V-Bucks Code Generator for 2024" | If you’re an avid Fortnite player, you’ve likely heard of V Bucks - the in-game currency that allows... | 0 | 2024-06-12T17:20:08 | https://dev.to/abdul_alim_d288797797683e/the-ultimate-v-bucks-code-generator-for-2024-21mm | If you’re an avid Fortnite player, you’ve likely heard of V Bucks - the in-game currency that allows you to purchase new skins, emotes, and other items to customize your gaming experience. With the rise in popularity of Fortnite,
[CLICK HERE TO GET FREE NOW>> ](https://bnidigital.com/codes-v2)
Looking for free V Bucks through code generators in 2024? Learn about the risks and alternative methods for earning V Bucks in Fortnite in this comprehensive guide.
So next time you come across a V Bucks code generator promising free V Bucks, beware of the risks involved and opt for legitimate ways to earn V Bucks in Fortnite. | abdul_alim_d288797797683e | |
1,885,957 | Web Scraping Vs Web Crawling | Web Scraping or Web Crawling Search and gather Aka crawling and scraping refers to the... | 0 | 2024-06-12T17:19:48 | https://dev.to/pranavmuttathil/web-scraping-vs-web-crawling-2me3 | webscraping, webcrawling, javascript, python | ## Web Scraping or Web Crawling
**Search and gather** Aka crawling and scraping refers to the acquisition of important website data by the use of automated bots. Web scraping is pretty common to track and analyze data and compare to its former self, Examples may include the **_Market data, finance, E-Commerce and Retail_** . Now you may ask, What exactly does it mean to crawl a website, What does it mean to Scrap a website?
### | How is it related to each other?
Suppose you have a Gmail with no storage left (Which I hope you don't) and you wish to acquire one important file, What would you do? You would **~~Give up~~** Start to go through each file and _**Stalin sort**_ the files to get the right one. This exact combined action of seperating and acquiring the important data translates to a webpage cohesively which is termed by **Crawling and Gathering**. <br>
## **The Good, the Bad and the Wayback machine**
Established in 1996, by Brewster Kahle and Bruce Gilliat, The wayback machine aka **The internet Archive** aka the warehouse of digital content that has seen its testament of time. It allows users to access the archvied versions of the website, evenn allowing you to navigate the website through its establishment. It works by sending automated **web crawlers** to various **publicly available websites** amd taking snapshots. It can be easily accessed and used by all, at https://wayback-api.archive.org/
<img src="https://dev-to-uploads.s3.amazonaws.com/uploads/articles/o526iumm1r3vrfikgfeb.png" width="900" height="500" style="text-align: center">
<br>
# What it can't store
> "_**With large data comes big storage bills**_", With a infinite pile of information coming up on its doorsteps, its storage capabilites have increased tenfolds. As of January 2024, It stores around **99 Petabytes**, and is expected to increase about **100 Terabytes per month**, such renders the Internet Archive unable to store the following
* Dynamic Pages
* Emails
* Chats
* Databases
* Classified Military Content _(Obviously)_
<br>
<br>
<br>
># _"Talk is Cheap. Show me the Code"_
>>## -Linus Torvalds
Creating your own time capsule is very easy by setting up a Web Crawler that preys into the website and collects data at regular intervals of time. Creation of your own bot for scraping is easily achieveable using various libraries like **BeauitfulSoup** (for **Python**) and **Cheerio** (for **Javascript**)
## For Python Enthusiasts
| You can install the libraries installed using the following **pip** command
```python
pip install beautifulsoup4
```
It utilises
### | Code:
```python
import requests
from bs4 import BeautifulSoup
def crawl_page(url):
response = requests.get(url)
soup = BeautifulSoup(response.content, "html.parser")
links = []
for a_tag in soup.find_all("a", href=True):
link = a_tag["href"]
if link.startswith("http"):
links.append(link)
return links
seed_url = "https://en.wikipedia.org/wiki/Ludic_fallacy"
visited_urls = []
crawl_depth = 2
def crawl(url, depth):
if depth == 0 or url in visited_urls:
return
visited_urls.append(url)
links = crawl_page(url)
for link in links:
crawl(link, depth-1)
crawl("https://en.wikipedia.org/wiki/Ludic_fallacy", 2)
print("Crawled URLs:", visited_urls)```
```
## For Javascript Enthusiasts
| Prerequisites include libraries such as **Axios** and **Cheerio**
```
npm install axios cheerio
```
Axios fulfills the job of making HTTP Requests to the website while Cheerio manipulates the incoming website data and allows you to extract valuable information using **CSS-Style selectors** which stores the extracted data as JSON files as objects with properties
### | Code:
```javascript
const axios = require('axios');
const cheerio = require('cheerio');
const targetUrl = 'https://en.wikipedia.org/wiki/Ludic_fallacy';
async function scrapeData() {
try {
const response = await axios.get(targetUrl);
const html = response.data;
const $ = cheerio.load(html);
const titles = $('h1').text().trim();
const descriptions = $('p').text().trim();
console.log('Titles:', titles);
console.log('Descriptions:', descriptions);
} catch (error) {
console.error('Error scraping data:', error);
}
}
scrapeData();
```
Make sure to be mindful of the website's **terms and conditions** and abide by by the **robots.txt** to pratice ethical scraping and to prevent yourself from legal trouble and have fun coding along the way. | pranavmuttathil |
1,885,907 | SPREAD VS REST OPERATORS | Spread Operator Arrays Imagine you have two lists of friends and you want to combine... | 0 | 2024-06-12T15:45:41 | https://dev.to/__khojiakbar__/spread-vs-rest-operators-p78 | spread, rest, javascript |
#**Spread Operator**
**Arrays**
> Imagine you have two lists of friends and you want to combine them into one list.
```
const schoolFriends = ['Ali', 'Bilol', 'Umar'];
const workFriends = ['Ubayda', 'Hamza', 'Abdulloh'];
const allFriends = [...schoolFriends, ...workFriends]
console.log(allFriends);
```
**Objects**
> Suppose you have two objects representing your personal and work contact information, and you want to combine them into one contact object.
```
const personalInfo = {
name: 'Khojiakbar',
phone: '90-024-10-98',
}
const workInfo = {
email: 'hojiakbar7796@mail.ru',
phone: '010-8210-4488',
}
const combinedInfo = {
...personalInfo,
...workInfo,
}
console.log(combinedInfo);
```
#**Rest Operator**
**Functions**
> You are organising a party and want to create a function that takes an indefinite number of guest names and prints them.
```
function inviteGuests(host, ...guests) {
console.log(`Host: ${host}`);
console.log(`Guests: ${guests.join(', ')}`);
}
inviteGuests('Khojiakbar', 'Umar', 'Uthman', 'Bilal');
```
**Arrays**
> You have a list of tasks for the day and want to separate the first task from the rest.
```
const firstTask = ['Wake up'];
const remainingTasks = ['Brush your teeth', 'Wash your face', 'Go to work']
console.log(`First task: ${firstTask}`);
console.log(`Remaining tasks: ${remainingTasks.join(', ')}`);
```
**Objects**
> You have a user profile object and you want to separate the username from the rest of the profile details.
```
const userProfile = {
username: 'Khojiakbar',
age: 26,
job: 'programmer',
city: 'Tashkent region',
}
const {username, ...otherDetails} = userProfile
console.log(`Username: ${username}`);
console.log(`Profile Details:`, otherDetails);
```
| __khojiakbar__ |
1,885,956 | জিপিএফ ব্যালেন্স চেক করার উপায় | অনলাইন পদ্ধতি: ই-সেবা পোর্টাল ব্যবহার করে: https://www.bangladesh.gov.bd/gpf/ এ যান। "সার্ভিস" মেনু... | 0 | 2024-06-12T17:17:21 | https://dev.to/infoblog/jipieph-byaalens-cek-kraar-upaay-543o | gpf | অনলাইন পদ্ধতি:
ই-সেবা পোর্টাল ব্যবহার করে:
https://www.bangladesh.gov.bd/gpf/ এ যান।
"সার্ভিস" মেনু থেকে "পেনশন ও ফান্ড ম্যানেজমেন্ট" নির্বাচন করুন।
"জিপিএফ ব্যালেন্স ও স্টেটমেন্ট" ক্লিক করুন।
আপনার ভোটার আইডি এবং মোবাইল নম্বর প্রদান করুন।
OTP প্রদান করুন যা আপনার ফোনে পাঠানো হবে।
আপনার জিপিএফ ব্যালেন্স এবং স্টেটমেন্ট দেখতে পারবেন।
CAO পেনশন ও ফান্ড ম্যানেজমেন্ট ওয়েবসাইট ব্যবহার করে:
https://www.cafopfm.gov.bd/ এ যান।
"GPF" মেনু থেকে "GPF Information" নির্বাচন করুন।
আপনার ভোটার আইডি এবং মোবাইল নম্বর প্রদান করুন।
OTP প্রদান করুন যা আপনার ফোনে পাঠানো হবে।
আপনার জিপিএফ ব্যালেন্স এবং স্টেটমেন্ট দেখতে পারবেন।
মোবাইল অ্যাপ ব্যবহার করে:
GPF Balance Check নামে একটি অ্যাপ আছে যা আপনি Google Play Store থেকে ডাউনলোড করতে পারেন।
অ্যাপ্লিকেশনটিতে আপনার ভোটার আইডি এবং মোবাইল নম্বর প্রদান করুন।
OTP প্রদান করুন যা আপনার ফোনে পাঠানো হবে।
আপনার জিপিএফ ব্যালেন্স দেখতে পারবেন।
USSD কোড ব্যবহার করে:
222 এ 121# ডায়াল করুন।
আপনার ভোটার আইডি প্রদান করুন।
OTP প্রদান করুন যা আপনার ফোনে পাঠানো হবে।
আপনার জিপিএফ ব্যালেন্স দেখতে পারবেন।
অফলাইন পদ্ধতি:
আপনি আপনার দপ্তরের জিপিএফ শাখায় যেতে পারেন এবং আপনার ব্যালেন্স জানতে পারেন।
আপনার জিপিএফ স্লিপ প্রিন্ট করার জন্য অনুরোধ করতে পারেন।
কিছু গুরুত্বপূর্ণ বিষয় মনে রাখবেন:
আপনার ভোটার আইডি এবং মোবাইল নম্বর সঠিকভাবে প্রদান করুন।
আপনার ফোনটিতে OTP পাওয়ার জন্য একটি সক্রিয় মোবাইল নম্বর ব্যবহার করুন।
আপনার জিপিএফ ব্যালেন্স এবং স্টেটমেন্ট গোপনীয় রাখুন।
আশা করি এই তথ্য আপনাকে সাহায্য করবে!
[জিপিএফ ব্যালেন্স চেক](https://infoblogbn.com/%e0%a6%9c%e0%a6%bf%e0%a6%aa%e0%a6%bf%e0%a6%8f%e0%a6%ab-%e0%a6%ac%e0%a7%8d%e0%a6%af%e0%a6%be%e0%a6%b2%e0%a7%87%e0%a6%a8%e0%a7%8d%e0%a6%b8-%e0%a6%9a%e0%a7%87%e0%a6%95/) করার পদ্ধতি গুলো আপনি সঠিকভাবে অনুসরণ করলে আপনার ব্যালেন্স সহজে দেখতে পারবেন। | infoblog |
1,843,479 | Installing Docker On Windows | It was a little finicky for me to use Docker from the Windows Command Line. This tutorial will... | 0 | 2024-06-12T17:16:06 | https://dev.to/binat/installing-docker-on-windows-ma4 | docker, linux, microsoft, devops | It was a little finicky for me to use Docker from the Windows Command Line.
This tutorial will ensure you have no such problems.
There are three main steps:
1. Install the Windows Subystem (WSL) 2 Linux distribution
2. Download and Install Docker Desktop for Windows
3. Configure Docker Desktop to access Docker from WSL
#### Installing WSL 2
Note: For a general tutorial see the WSL documentation [here](https://learn.microsoft.com/en-us/windows/wsl/install)
Open the command prompt in administrator mode by right clicking and selecting run as administrator.
Run the following command `wsl --install `
Check which version is installed with `wsl -l -v`
If it is not already version 2, set WSL to the correct distribution with `wsl --set-default-version 2`
#### Download and Install Docker Desktop
Download and install Docker Desktop for Windows from [here](https://docs.docker.com/desktop/install/windows-install/)
Once installation is finished, you should be able to open the Docker Desktop application.
#### Configure Docker Desktop
In Docker Desktop, go to Settings, then select the resources tab. Set the terminal to be integrated with the WSL distribution.
Docker should now work from the command line.
Thank you for reading my first post! | binat |
1,885,953 | AI Injects Creativity: How Artificial Intelligence is Transforming Manga Creation | This article explores the exciting ways Artificial Intelligence (AI) is assisting manga artists, from... | 0 | 2024-06-12T17:15:29 | https://dev.to/malconm/ai-injects-creativity-how-artificial-intelligence-is-transforming-manga-creation-3pl5 | ai, manga, art | This article explores the exciting ways Artificial Intelligence (AI) is assisting manga artists, from sparking inspiration to refining artwork.
## **AI-Powered Inspiration: A Spark for New Ideas**
For artists facing creative block, AI art generation tools are a game-changer. These tools, like [Nightcafe Creator](https://creator.nightcafe.studio/), can generate unique visuals based on keywords or prompts. Imagine struggling to envision a futuristic cityscape? Simply feed "neon cyberpunk city" into the tool and get a variety of creative outputs to spark your imagination! These AI-generated images are a springboard, allowing you to refine and personalize them to fit your vision.
Platforms like [Aiconvert](https://aiconvert.online/) offer user-friendly interfaces and various art generation styles for a more artist-friendly approach.
## Beyond the Initial Sketch: Refining Artwork with AI
AI's capabilities extend beyond inspiration. Photo editing tools powered by AI are revolutionizing how artists refine their artwork. These tools offer features like:
Noise Reduction: AI tools like [Topaz DeNoise](https://www.topazlabs.com/denoise-ai) effectively remove unwanted grain or digital noise from scans or digital artwork.
Color Correction: Fine-tuning color palettes and correcting inconsistencies is a breeze with AI tools like [Imagen AI](https://imagen-ai.com/).
Special Effects: Adding flourishes like glowing effects, motion blur, or specific textures is effortless with tools like [PhotoWorks](https://photo-works.net/).
## A Powerful Collaboration: AI as an Artist's Ally
AI is not here to replace artists. It's here to empower them! These tools are assistants, allowing artists to work faster and explore new creative possibilities. The artistic vision and storytelling remain firmly in the hands of the manga creator.
## **Exploring the Potential: Where to Learn More**
The world of AI-assisted manga creation is young, with new tools and techniques emerging all the time. Here are some resources for artists who want to delve deeper:
[Midjourney](https://www.midjourney.com/home): A platform that allows users to generate images using text descriptions.
[Artbreeder](https://www.artbreeder.com/create): An AI-powered tool for creating and manipulating portraits.
[Manga Studio Tips](https://tips.clip-studio.com/en-us): Provides tutorials and resources for manga artists, including discussions on new technologies like AI
By embracing AI as a creative partner, manga artists can unlock new levels of efficiency and artistic expression. This technology holds immense potential to shape the future of manga creation.
| malconm |
1,885,951 | How to Validate a SaaS Idea Quickly? | In the fast-paced world of software development, validating your SaaS idea before diving into... | 0 | 2024-06-12T17:10:29 | https://dev.to/ayoub_el_dcdf2ab179a6b0a8/how-to-vali-2lco | saas, pagebuilder, waitlist | In the fast-paced world of software development, validating your SaaS idea before diving into development is crucial. It saves time, resources, and ensures there is a market for your product. An effective methodology to achieve this is “Fake it Until You Make it.” This article explores how to implement this strategy using a landing page, a waiting list, and marketing techniques.
## Why Validate Your Idea?
Validating your SaaS idea before starting development has several advantages:
Avoid Costly Failures: Save time and money by ensuring there is a demand for your product.
Understand the Market: Early feedback helps you understand the needs and expectations of potential users.
Improve the Product: Feedback from initial users allows you to refine and improve your product before heavily investing in it.
## The “Fake it Until You Make it” Methodology
The “Fake it Until You Make it” methodology involves simulating the existence of your product before it is fully developed. Here’s how to proceed:
## 1. Create a Landing Page
The first step is to create an attractive landing page that describes your SaaS idea. This page should:
Clearly Present Your Product: Explain what your SaaS does and what problems it solves.
Highlight the Benefits: Describe the advantages that users will gain from your product.
Include Compelling Visuals: Use images or mockups to illustrate your product.
For this step, you can use a tool like [Start List](https://getstartlist.com/) which allow you to create a landing page to introduce your project in just few minutes.
## 2. Set Up a Waiting List
Add a signup section to your landing page to build a waiting list. This helps to:
Measure Interest: See how many people are willing to sign up to learn more about your product.
Collect Emails: Build a database of potential users for future communications.
For this step too, you can use [Start List](https://getstartlist.com/) to have a pre-built Waiting List and to collect emails from your users.
## 3. Start Marketing
Once your landing page is set up, start promoting your idea:
Use Social Media: Share your landing page on various platforms to attract traffic.
Launch Ad Campaigns: Invest in paid ads to reach a broader audience.
Participate in Forums and Groups: Engage in relevant online communities to share your idea and gather feedback.
## 4. Evaluate Engagement
After setting up and promoting your landing page, it’s time to assess the results:
Analyze Signups: How many people signed up for your waiting list?
Gather Feedback: Contact the signups to get their opinions and suggestions.
Measure Interest: The number and quality of signups will give you an idea of the interest in your product.
## 5. Move to Development
If your idea attracts enough attention and positive feedback, it’s time to move to the next stage:
Start Development: Implement the core features based on the feedback received.
Maintain User Engagement: Continue to involve your waiting list by providing updates and asking for regular feedback.
## Conclusion
Validating your SaaS idea before starting development is a crucial step.
Using the “Fake it Until You Make it” methodology, you can test your idea, gather valuable feedback, and ensure there is a market for your product before investing too many resources.
An effective landing page, an engaged waiting list, and a well-thought-out marketing strategy are key to this early validation. So use tools like [Start List](https://getstartlist.com/) to validate a lot of ideas quickly. | ayoub_el_dcdf2ab179a6b0a8 |
1,885,950 | How to vali | In the fast-paced world of software development, validating your SaaS idea before diving into... | 0 | 2024-06-12T17:10:29 | https://dev.to/ayoub_el_dcdf2ab179a6b0a8/how-to-vali-22k | saas, pagebuilder, waitlist | In the fast-paced world of software development, validating your SaaS idea before diving into development is crucial. It saves time, resources, and ensures there is a market for your product. An effective methodology to achieve this is “Fake it Until You Make it.” This article explores how to implement this strategy using a landing page, a waiting list, and marketing techniques.
Why Validate Your Idea?
Validating your SaaS idea before starting development has several advantages:
Avoid Costly Failures: Save time and money by ensuring there is a demand for your product.
Understand the Market: Early feedback helps you understand the needs and expectations of potential users.
Improve the Product: Feedback from initial users allows you to refine and improve your product before heavily investing in it.
The “Fake it Until You Make it” Methodology
The “Fake it Until You Make it” methodology involves simulating the existence of your product before it is fully developed. Here’s how to proceed:
1. Create a Landing Page
The first step is to create an attractive landing page that describes your SaaS idea. This page should:
Clearly Present Your Product: Explain what your SaaS does and what problems it solves.
Highlight the Benefits: Describe the advantages that users will gain from your product.
Include Compelling Visuals: Use images or mockups to illustrate your product.
For this step, you can use a tool like Start List which allow you to create a landing page to introduce your project in just few minutes.
2. Set Up a Waiting List
Add a signup section to your landing page to build a waiting list. This helps to:
Measure Interest: See how many people are willing to sign up to learn more about your product.
Collect Emails: Build a database of potential users for future communications.
For this step too, you can use Start List to have a pre-built Waiting List and to collect emails from your users.
3. Start Marketing
Once your landing page is set up, start promoting your idea:
Use Social Media: Share your landing page on various platforms to attract traffic.
Launch Ad Campaigns: Invest in paid ads to reach a broader audience.
Participate in Forums and Groups: Engage in relevant online communities to share your idea and gather feedback.
4. Evaluate Engagement
After setting up and promoting your landing page, it’s time to assess the results:
Analyze Signups: How many people signed up for your waiting list?
Gather Feedback: Contact the signups to get their opinions and suggestions.
Measure Interest: The number and quality of signups will give you an idea of the interest in your product.
5. Move to Development
If your idea attracts enough attention and positive feedback, it’s time to move to the next stage:
Start Development: Implement the core features based on the feedback received.
Maintain User Engagement: Continue to involve your waiting list by providing updates and asking for regular feedback.
Conclusion
Validating your SaaS idea before starting development is a crucial step.
Using the “Fake it Until You Make it” methodology, you can test your idea, gather valuable feedback, and ensure there is a market for your product before investing too many resources.
An effective landing page, an engaged waiting list, and a well-thought-out marketing strategy are key to this early validation. So use tools like Start List to validate a lot of ideas quickly. | ayoub_el_dcdf2ab179a6b0a8 |
1,885,902 | This post is a test post | This is a test | 0 | 2024-06-12T15:37:17 | https://dev.to/antoinefamibelle/this-post-is-a-test-post-1i48 | This is a test | antoinefamibelle | |
1,885,949 | This should be Drupal Starshot's Destination | This article originally appeared on Symfony Station. I won't beat a dead rocket launcher. Many... | 0 | 2024-06-12T17:02:23 | https://symfonystation.mobileatom.net/Drupal-Starshot | drupal, starshot, php | This article [originally appeared on Symfony Station](https://symfonystation.mobileatom.net/Drupal-Starshot).
I won't beat a dead rocket launcher. Many people have written good reviews about the Starshot announcement. If you read our communiqués you have seen plenty of them in recent weeks and there will be more to come. In fact, [the leadership team was announced](https://dri.es/announcing-the-drupal-starshot-leadership-team) today.
Instead after a quick introduction to Starshot this article shares my vision of what it should become.
The stated aim of Starshot is to make using Drupal easier. Which is great, because any and everything about Drupal needs to be simplified. Especially its poor user experience. I have [written about this before](https://symfonystation.mobileatom.net/Drupal-Path-Growth).
This initiative should have happened years ago. And I don't have much confidence it will meet its timetable.
But, better late than never. And I do think they will get there eventually.
## Background for Drupal Starshot
Before I start with my vision, here are some background resources:
- [The official Starshot page](https://www.drupal.org/starshot)
- [Dries's announcment at DrupalCon](https://dri.es/state-of-drupal-presentation-may-2024)
- [Mike Herchel has the best review](https://herchel.com/articles/thoughts-drupals-new-starshot-initiative)
Starshot's official raison d'etre is:
''Starshot will be a fast-moving Open Source product that enables site builders without Drupal experience to easily create a new Drupal site and extend it with pre-packaged recipes, all using their browser. It will guide site builders to install recipes for common use cases and innovative capabilities that are immediately useful for production. It will focus on getting people from install to launch really fast and will bring new people and contributors into Drupal and the Open Web."
And it aims to achieve this with:
"A package built on Drupal core, including refined common features from the contributed project ecosystem to create a great user experience out of the box. Starshot is built on top of results from recent initiatives like Recipes, Project Browser, and Automatic Updates to take Drupal to new heights."
## This is the most important thing Drupal has ever done
If you are a follower of Symfony Station, you know a large part of our mission is to protect democracy. And we do that by fighting big proprietary tech. We do it with open-source software, protocols, websites, and social media.
But, this freedom tech has to be easy for everyone to use. We need the average user to be able to fight big tech tyranny and counter its surveillance, misinformation, and censorship. We can't rely on developers only if we want to protect our freedom. The success of Starshot is important so democracy's protectors don't just have to rely on WordPress for their CMS. Niche Fediverse blogging is not ready yet. But it's improving.
So, it's vital that Drupal can also be an ally to the Fediverse and other defederated technologies in the fight against authoritarianism. Of which big tech is a natural ally. C^nt billionaires and today's monopolistic capitalism hate democracy and are actively working to destroy it. All they care about is more control and money. And many developers are happy to be their foot soldiers.
A quick rant. Speaking of said foot soldiers, if you can't keep from working with the enemies of freedom, at least unionize and try to reign them in. You might even be able to keep your shit job. Rant over.
And of course, Drupal has an [Open Web Manifesto](https://www.drupal.org/association/open-web-manifesto) and Starshot can strengthen it.
## Starshot's Goals
As you would expect Drupal core will be included with Starshot.
Drupal's goal with [Automatic Updates](https://www.drupal.org/about/core/strategic-initiatives/automatic-updates) "is to implement a secure system for automatically installing updates in Drupal, lowering the total cost of ownership of maintaining a Drupal site, improving the security of Drupal sites in the wild, and lowering the barrier to entry to using Drupal."
They have been working on Automatic Updates for eight god-dammed years, so who knows if it will be ready by Starshot's end of year deadline.
The goal for [Project Browser](https://www.drupal.org/about/starshot/initiatives/project-browser) is to make it easier to find and install modules for people that are (1) new to Drupal and (2) site builders.
I have more faith in the Project Browser team.
[Recipes'](https://www.drupal.org/about/starshot/initiatives/recipes) goal is a feature in Drupal called a “recipe” that **can be installed at any point in the lifecycle** of a Drupal application. This includes during installation through the Project Browser, which overlaps with the selection of distributions in a Drupal application. They are available now.
I wrote more about Recipes in [Cooking Up Convenience - Symfony Flex's Recipes and the Drupal Recipes Initiative](https://symfonystation.mobileatom.net/Symfony-Flex-Drupal-Recipes)
Recipes options should include:
- Blogs
- Publications
- eCommerce
- PWAs
- Government
- Education
- Healthcare
- Non-profit
- Headless
- Portfolios
- and more
Here is [a current list of recipes](https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-documentation/distributions-and-recipes-initiative/recipes-cookbook). Which are mostly generic. If you want to try one now, here are [the docs](https://www.drupal.org/project/distributions_recipes).
Maybe current distributions could be converted to Recipes or build off Starshot itself depending on how all this goes. Currently, you can add a recipe to a distribution.
### A Recipe I would like to see
For a recipe example, let's use what I would be most interested in. A publication.
It could include contributed modules for:
- publishing workflows for teams
- team-editing
- social media publishing and interaction, specifically the Fediverse
- customized media modules like video, image, eBook, and PDF hosting
- GDPR, other compliance checkers, and alt tag generation (And AI would be fine here)
- grammar, style guideline, and accessibility checkers (AI would be fine here)
- subscriptions
- newsletter integrations
- payments and micro-payments
- and no generative AI, because journalists should be able to write and use real images
- and no comments because of spammers
## Experience Builder
Starshot will improve, replace, etc. Layout Builder (which currently is a clusterfuck.) The replacement [Experience Builder](https://www.drupal.org/node/3375371), is envisioned as some combination of [Layout Builder](https://www.drupal.org/docs/8/core/modules/layout-builder) (or a replacement hopefully), [Paragraphs](https://www.drupal.org/project/paragraphs) (not so great), [Single Directory Components (SDCs)](https://www.drupal.org/docs/develop/theming-drupal/using-single-directory-components)(great stuff), an in-browser styling tool, and other modules/configuration to provide a page-building solution that is **easy to use**.
This is good because Layout Builder as it stands now is not worth much to site builders. Basically, it's a way to add core or custom blocks to your individual content types in order to standardize their layouts. It's damn sure not an easy-to-use page builder.
### It should have included Gutenberg
Drupal considered Gutenberg for Experience Builder. And they should have gone with it. But at least they have not ruled it out in the long run. And really it should be an alternative editor in Core eventually. Then users could build whatever the fuck they want to. And have better UX, UI, and frontend designs without going headless.
According to Frontkom (the firm leading Gutenberg Drupal) if Starshot had integrated it, there would have been these immediate benefits:
- Drupal is built for larger websites, and the open-source space can compete with the larger proprietary systems by simply being **easier to use**. And the same would be true for smaller websites and platforms like Wix, Squarespace, etc.
- Gutenberg offers a more user-friendly and visually appealing editing experience. Content creators can leverage drag-and-drop functionality and a block-based approach to easily structure their content. This empowers them to create rich layouts without needing extensive coding knowledge.
- It can be used in combination with both Paragraphs and Layout Builder. And it will support single-field editing features.
- It can be super minimalistic at first, where you start with a blank canvas. But under the hood, you have hundreds of features out of the box that you can activate or not.
- If you turn off Gutenberg, you still have content visible on your site and ready for any migration in the future.
- RSS feeds and other Drupal View listings are handled with field mapping within Drupal Gutenberg. Thus, data from Gutenberg is populated into other fields of the content type, ready for all kinds of field data cherry-picking.
- Combined with the feature of being entity agnostic, you can use Gutenberg easily on taxonomies, in webforms, on blocks, and also within Layout Builder.
Fortunately, you can still use Gutenberg as an editor for your content type's bodies via a module. Thus it will be compatible with with whatever Starshot evolves into.
And you can always create custom Gutenberg blocks with React (which sucks) if you really have to.
Eventually you might even be able to theme with it, like you can in WordPress. That would really help Drupal grow and Starshot reach high orbit.
## The Holy Grail - Hosting
Any hosting company with any sense will be developing a scaled-down and optimized installation and hosting option for Starshot. And they should price it accordingly. More A2 Hosting and less Acquia should be the goal.
And wouldn't it be awesome if it was [WebAssembly](https://webassembly.org/) based?
Gábor Hojtsy writes in his [blog post about Starshot](https://www.hojtsy.hu/blog/2024-may-11/15-reasons-i-am-excited-about-drupals-new-starshot-initiative):
"Discussions around making simple hosting available for simpler sites was reignited and a WebAssembly-based browser-executed demo solution's feasibility is also explored again."
He also mentioned the potential for a [WebAssembly-based option](https://youtu.be/dHbH8ubQoi0?si=khzG47bzv8NBhfo7&t=960) in his DrupalCon Portland 2024 session about Drupal 11, as well as options for ephemeral (temporary) hosting solutions (think [SimplyTest.me](https://simplytest.me/).)
One exciting project is [Wasmer WebAssembly](https://wasmer.io/posts/running-php-blazingly-fast-at-the-edge-with-wasm). Currently it has [starter templates](https://wasmer.io/templates) for WordPress, Laravel, Symfony, and generic PHP. So hopefully something could be done with Starshot down the road.
[WordPress Playground](https://wordpress.org/playground/) already [shows what's possible](https://www.searchenginejournal.com/wordpress-playground/518048/)with WebAssembly.
## Want to start with Starshot now?
If you answered yes, here is a [very early prototype](https://github.com/phenaproxima/starshot-prototype) you can experiment with. Have fun! And **please contribute to Starshot**. Lot's of the large Drupal agencies are.
## Wrapping it up
It's too early to know how Starshot will shake out. But it's a fantastic idea and I truly hope it succeeds in its goals despite my inherent curmudgeoness on its development pace.
I think:
- Recipes integration is the feature to focus on initially.
- Gutenberg or another user-friendly block solution needs to eventually be an option in the Experience Builder, which should be the second most important focus itself. Maybe SDCs would be adequate.
- Customized Starshot installation and hosting should be available and eventually based on WebAssembly.
- Starshot should be extremely easy to use for a person of average intelligence.
- Smart site builders should be able to knock it out of the park with Startshot.
- It should integrate open protocols like Activity Pub, etc.
- And they should call it Sympal. 😈
I hope you enjoyed this opinionated article and be sure to visit the official Starshot links at the top. Drupal knows where it needs to go. It just needs to move faster getting there. Starshot is their latest shot at achieving speed and ease of use. Let's hope they land it.
Happy coding and **noncoding**, Drupalers!
## Author
### Reuben Walker
Founder
Symfony Station | reubenwalker64 |
1,885,948 | How Does SAP Migration Work? | Digital technology has completely transformed the way in which modern businesses operate. It can... | 0 | 2024-06-12T16:57:24 | https://dev.to/templatewallet/how-does-sap-migration-work-3784 | Digital technology has completely transformed the way in which modern businesses operate. It can offer a huge range of new possibilities and opportunities, with more effective business management and customer relationship capabilities.
However, digital technology can also be complex and difficult to understand. Data management and analysis are key aspects of modern business, so ensuring you have the best system in place for doing so is vital. In this guide, first, we’re going to look at SAP technology, and then we’re going to ask: how can you migrate to [SAP S/4HANA](https://www.panaya.com/blog/sap/what-is-sap-s-4hana/)? Read on to find out more.
##What is SAP Technology?
SAP is a German multinational software company that produces a range of different software tools and solutions.
SAP products are highly advanced and make use of the most cutting-edge, sophisticated technology. The company’s portfolio of products includes tools for optimizing business operations and logistics as well as customer relationship management, with a particular focus on data collection and analysis.
SAP products are powered by the company’s native HANA technology. HANA is a multi-model database that stores data within memory, rather than on a hard drive, a unique approach that sets it apart from similar database products.
As well as data storage and management, HANA also allows for the development and implementation of custom apps and digital tools, with extensive options for cross-compatibility and further integration.
##SAP S/4HANA
S/4HANA is a suite of software tools launched by SAP in 2015. Since then, the tools have been continually updated and improved, with S/4HANA SAP’s most successful and popular offering on the market today.
Some of the software available as part of the S/4HANA package includes tools for asset management, multi-tier data storage, and predictive analysis, all of which are powered by HANA database technology.
The versatility and flexibility of S/4HANA means that it can be used across a range of different industries, including retail, manufacturing, defense, education, and healthcare.
##Why Should You Migrate to SAP S/4HANA?
With S/4HANA, SAP intended to create a suite of software solutions that would allow businesses to successfully undergo the digital transformation process. Digital transformation is the digitization of business operations and workflows. While almost all businesses are digitized to some degree, digital transformation is the process of digitizing all aspects of a business, or at least as many as possible.
Digitizing individual parts of your business one by one can be time-consuming and resource intensive. What’s more, things can quickly become confused and chaotic, and there is the risk of important or sensitive data becoming lost or corrupted.
S/4HANA can offer a comprehensive digital transformation solution. It can be used to manage sales, logistics, supply chains, manufacturing, finances, or all of the above.
Whether you are using an existing SAP framework such as ECC or another model, there are a few things you need to know about the S/4HANA migration process.
##How does the Migration Work?
The first thing you need to know about S/4HANA is that it only works with HANA databases. If you are not currently using a HANA database, this is something you must address before you can migrate to S/4HANA.
Next, you’re going to need to decide how you are going to implement S/4HANA. One of the solutions’ biggest benefits is its flexibility. It can be integrated with your business in a number of ways, including through physical server hosting or dedicated or private cloud hosting. You can even use a combination of the three. The option you choose will be determined by what your business needs and what you are looking to get from an S/4HANA migration.
You’re then going to need to devise and establish a migration plan. This step is crucial; S/4HANA migration can be complex, it’s absolutely essential that you have a clearly defined plan in place to ensure you meet your business goals and objectives. You’ll need to think about why you are migrating, what it will offer your business and the potential risks and issues you could encounter during the process.
HANA databases run on the Unicode language standard, so if your current model uses a different language, you are going to need to convert everything into Unicode before you migrate to S/4HANA, which can be a lot of work.
The final stage of migration to S/4HANA is testing. This is a vital step; thorough rounds of testing must be completed to ensure all elements are working correctly. Failing to test properly can lead to issues arising further down the line, which can negatively impact business operations.
For a big project like S/4HANA migration, sandbox testing is recommended. This allows for process testing in an isolated environment, where issues will not cause damage to wider business systems or networks.
##Conclusion
Migrating to an S/4HANA system can be complicated, but the benefits can help you take your business to the next level. The S/4HANA suite of software tools offers a range of advantages and can be used to optimize various business processes and operations, including logistics, sales, and supply chain management. By integrating modern AI and machine learning tech, S/4HANA is more powerful than ever, and the software is fast becoming a must-have for businesses in today’s digital age. | templatewallet | |
1,885,947 | 1. Introducción a la Observabilidad | Ante los nuevos desafíos que enfrentamos en el desarrollo de software, la observabilidad surge como... | 0 | 2024-06-12T16:57:06 | https://dev.to/ray_floresnolasco_b50a4e/1-introduccion-a-la-observabilidad-4fah | Ante los nuevos desafíos que enfrentamos en el desarrollo de software, la observabilidad surge como una herramienta para ayudarnos a comprender mejor la complejidad de los sistemas, los cuales van creciendo constantemente, brindándonos una visión más clara del estado y funcionamiento de nuestras aplicaciones.
------
## ¿Qué es la Observabilidad?
La observabilidad viene a ser la capacidad de comprender y diagnosticar el estado interno de sistemas complejos a través de la monitorización y el análisis de sus salidas externas. Esto con el fin de detectar problemas internos y la manera en la que el sistema trabaja. Originariamente, el concepto de observabilidad proviene de la Teoría del Control, la cual va enfocada al análisis de sistemas dinámicos y que se ha ido adoptando en diferentes disciplinas como en la Ingeniería de Software.
------
## ¿Por qué es importante la observabilidad en el Desarrollo de Software?
La observabilidad es fundamental en el desarrollo de nuestra aplicación, ya que nos ayuda a optimizar y mejorar el nivel de rendimiento y calidad de servicio que se brinda. Dos conceptos importantes relacionados en este proceso son: **SLA** (Acuerdos de nivel de servicio) y **KPI** (Indicadores clave de desempeño).
Mientras los SLAs son los estándares y niveles mínimos que se debe cumplir para mantener la satisfacción del cliente, los KPIs nos brindan información para evaluar el rendimiento de la aplicación en relación a los objetivos planteados.
La observabilidad nos permite llegar al diagnóstico y resolución de problemas de manera más rápida y eficaz, incluso cuando se trata de problemas desconocidos e impredecibles, ayudándonos con una mejor toma de decisiones para la optimización y mejora de nuestro servicio.
------
## Principales funciones de la observabilidad
- Recolección de datos como logs, métricas y trazas de ejecución
- Comprensión del funcionamiento interno de nuestra aplicación
- Diagnóstico e Identificación de problemas
- Toma de decisiones informada
- Monitoreo de SLAs y KPIs
- Optimización de la aplicación
- Mejora de la experiencia del usuario
- Mejora continua
-----
## Conceptos claves relacionados a la observabilidad
### 1. Logs
Vienen a ser la recopilación de información acerca de eventos relevantes generados por la aplicación; esto permite tener un historial útil para la búsqueda y análisis de los eventos para la identificación de problemas.
### 2. Métricas
En la observabilidad, las métricas son indispensables, ya que son los valores cuantificables que proporcionan información acerca del comportamiento y rendimiento del sistema. Los tipos de métricas más comunes son: La latencia, Tiempo de respuesta, Número de peticiones, Uso de CPU y Memoria, Tiempo de Inactividad, etc.
### 3. Trazas
Son registros detallados de diferentes servicios relacionados en un flujo de ejecución, que proporcionan una visualización de extremo a extremo basada en las solicitudes y respuestas. Estas trazas ayudan a identificar qué componente o parte del sistema está generando posibles cuellos de botella, errores en el funcionamiento, problemas de rendimiento, entre otros.
> Los Logs, Trazas y Métricas vienen a ser los tres pilares fundamentales de la observabilidad que nos permite tener una visualización holística del funcionamiento de nuestro sistema, por lo que es importante la relación entre ellos para el correcto análisis y diagnóstico de problemas como mejora de rendimiento y calidad del software.
### 4. Monitoreo
El monitoreo viene a ser un conjunto de herramientas que permiten saber el estado y rendimiento del sistema. En el desarrollo de software, el monitoreo implica la supervisión de métricas e indicadores clave para verificar el funcionamiento del sistema, como también contar con un sistema de alertas para tratar los problemas que se presenten.
### 5. Telemetría
Es la capacidad de recopilar datos de los eventos de un sistema de manera externa. Éste es un concepto usado en varios campos como la ciencia y medicina; en el caso del desarrollo de software, la telemetría hace referencia a la recopilación de datos en tiempo real como las métricas, registros (logs), eventos y trazas del sistema, para que se pueda hacer seguimiento de manera externa.
### 6. Instrumentación
En el desarrollo de software, la instrumentación implica la inserción de código dentro de la aplicación en puntos clave para la recopilación de datos necesarios sobre su funcionamiento (métricas, logs, eventos y trazas).
### 7. Visualización
Es la representación de los datos recolectados de manera clara y organizada para facilitar el monitoreo e identificación de anomalías del sistema. Algunas herramientas usadas para lograr esto son: Paneles (Dashboards), gráficos y tablas.
### 8. Alertas
Son herramientas que ayudan a la identificación de problemas a través de la notificación de eventos críticos que requieran atención inmediata. Estas notificaciones son previamente configuradas en base a umbrales y permiten tener respuestas proactivas.
### 9. Cultura de Observabilidad
El factor humano viene a ser muy importante, ya que son las personas y equipos quienes realizan el monitoreo y toma de decisiones, así como también la resolución de problemas y optimización del sistema. Es por eso que se debe desarrollar una cultura de observabilidad en donde se comprenda su impacto y se fomente la colaboración y comunicación entre los colaboradores para garantizar la fiabilidad y rendimiento del sistema.
----
En este artículo hemos explorado la importancia e impacto de la observabilidad en el ámbito del desarrollo de software, así como también los conceptos esenciales para empezar a adaptarlos en nuestras organizaciones. La observabilidad requiere una implementación integral y para que realmente se logren los objetivos, es necesario tanto la parte técnica como la cultura dentro de la organización. | ray_floresnolasco_b50a4e | |
1,885,946 | Professional photographer in Manchester | Jonathan Cohen Photography | Jonathan Cohen Photography, based in Manchester, specializes in capturing high-quality, imaginative,... | 0 | 2024-06-12T16:56:13 | https://dev.to/jonathancohenphotography1/professional-photographer-in-manchester-jonathan-cohen-photography-2gjd | Jonathan Cohen Photography, based in Manchester, specializes in capturing high-quality, imaginative, and creative photographs. The website showcases various services as [professional photographer manchester](https://jonathancohenphotography.co.uk), including wedding, corporate event, festival, and portrait photography. Jonathan Cohen emphasizes a unique and personalized approach, ensuring each photoshoot is a memorable experience. The gallery displays diverse examples of his work, highlighting his ability to capture genuine emotions and candid moments. Testimonials from satisfied clients praise the professional and friendly service. For more information or to book a session. | jonathancohenphotography1 | |
1,879,646 | TypeScript strictly typed - Part 2: full coverage typing | In the previous part of this posts series, we discussed about how and when to configure a TypeScript... | 27,444 | 2024-06-12T16:53:10 | https://dev.to/cyrilletuzi/typescript-strictly-typed-part-2-full-coverage-typing-4cg1 | typescript, javascript, productivity, webdev | In the [previous part](https://dev.to/cyrilletuzi/typescript-strictly-typed-part-1-configuring-a-project-9ca) of this [posts series](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln), we discussed about how and when to configure a TypeScript project. Now we will explain and solve the first problem of TypeScript default behavior: from partial to full coverage typing.
We will cover:
- What is really TypeScript?
- How typing works in TypeScript?
- Required missing types
- Ban any `any`
- The unknown `unknown` type
- Required errors checks
- Who is `this`?
- Should we add explicit types everywhere?
- Required objects and arrays types
- Required return types
- Do not use _any_ library
- A better TypeScript lib
- Dangerous assertions
## What is really TypeScript?
This topic requires to understand TypeScript correctly.
The [official TypeScript home page](https://www.typescriptlang.org) defines it as **"a strongly typed programming language that builds on JavaScript"**.
Everyone knows about the first part of the definition. Fewer are fully aware of the second part, "that builds on JavaScript", and what it means exactly.
It means that TypeScript is a superset of JavaScript. Told differently: **valid JavaScript should be valid TypeScript**.
Just change `example.js` to `example.ts` and it should be OK! (If by doing so, one gets errors, it would only be because they were doing bad things which were undetected in JavaScript, but never because of a TypeScript syntax problem.)
It was an important decision in TypeScript design, because it is one of the main reasons of its success.
Indeed, **if one already knows how to program with JavaScript, they already know how to program with TypeScript**. Sure it will be basic TypeScript, but one does not have to learn a whole new language.
## How typing works in TypeScript?
But this has a drawback: **TypeScript is only partially typed by default**.
Let us take a really basic example, which is valid JavaScript (and thus valid TypeScript):
```ts
function chocolate(quantity, organic = true) {}
```
Given that `organic` parameter has a default value, TypeScript is able to automatically infer that its type is `boolean`.
But TypeScript is not a seer: it cannot infer the type of `quantity` parameter.
So with explicit types, the above example is equivalent to this:
```ts
function chocolate(quantity: any, organic: boolean = true): void {}
```
It means that **by default, only a portion of the code is really typed**. Correctness of what is done with `organic` variable will be checked, but not what is done with `quantity`:
```ts
function chocolate(quantity: any, organic: boolean = true): void {
// Compilation OK, but runtime error if `quantity` is a number
quantity.toUpperCase();
// Compilation error
organic.toUpperCase();
}
```
## Required missing types
- TypeScript: [`noImplicitAny`](https://www.typescriptlang.org/tsconfig/#noImplicitAny) (in `strict`)
- ESLint: missing rule
- Biome: [`suspicious.noImplicitAnyLet`](https://biomejs.dev/linter/rules/no-implicit-any-let/) (in `recommended`)
To fix this default behavior, `noImplicitAny` is the most important TypeScript compiler option. It is included in `strict` mode.
```ts
// Compilation error in strict mode
function chocolate(quantity, organic = true) {}
```
It enforces explicit types when TypeScript cannot infer automatically:
```ts
// OK
function chocolate(quantity: number, organic = true) {}
```
Note that `noImplicitAny` enforces explicit types only when inference is not possible. So it is not required to add explicit types everywhere. But should we? We will discuss that below.
Biome has an additional linter rule `noImplicitAnyLet ` (which does not exist yet in TypeScript ESLint) to catch something which `noImplicitAny` does not report:
```ts
let linter; // any
linter = "biome";
```
## Ban any `any`
- ESLint: [`@typescript-eslint/no-explicit-any`](https://typescript-eslint.io/rules/no-explicit-any/) (in `recommended`)
- Biome: [`suspicious.noExplicitAny`](https://biomejs.dev/linter/rules/no-explicit-any/) (in `recommended`)
`noImplicitAny` is not strict enough yet. TypeScript still allows this code:
```ts
function watch(movie: any): void {
// Runtime error if `movie` is not a string
movie.toUpperCase();
}
```
`any` means it can be anything, so TypeScript will let us do anything from that point. One could consider that `movie.toUpperCase()` is not really TypeScript anymore, but just totally unchecked JavaScript.
So explicit `any` must be disallowed completely via the linter `no-explicit-any` rule.
## The unknown `unknown` type
But what to do when one really does not know a data type? The right type to use is `unknown`.
```ts
function watch(movie: unknown): void {
// Compilation error
movie.toUpperCase();
if (typeof movie === "string") {
// OK
movie.toUpperCase();
}
}
```
The difference here is that `unknown` means what it means: the data type is unknown, so TypeScript will not let us do anything, except if we check the type by ourself.
But note that except for very few special cases, data types are usually known. What happens more frequently is that the type can be variable: it is called [generics](https://www.typescriptlang.org/docs/handbook/2/generics.html).
```ts
interface ApiData<T> {
error?: string;
data: T;
}
function fetchData<T>(): ApiData<T> {}
fetchData<Movie>();
fetchData<TVSeries>();
```
Another reason one could be tempted to use `any` or `unknown` is when the data structure is too complicated to describe.
Types can serve here as a design warning: if a structure is too complicated to describe as a type, it should probably be simplified, or maybe the wrong concept is used (an object instead of a `Map` for example).
## Required errors checks
- TypeScript: [`useUnknownInCatchVariables`](https://www.typescriptlang.org/tsconfig/#useUnknownInCatchVariables) (in `strict`)
- ESLint: [`@typescript-eslint/use-unknown-in-catch-callback-variable`](https://typescript-eslint.io/rules/use-unknown-in-catch-callback-variable) (in `strict-type-checked`)
- Biome: missing rule
`useUnknownInCatchVariables` exists because TypeScript cannot be sure at compilation time what will be the type of errors in `catch` blocks.
```ts
/* In default mode */
try {
someAction();
} catch (error) { // `any` type
// Runtime error if not an `Error`
error.message;
}
/* In strict mode */
try {
someAction();
} catch (error) { // `unknown` type
// Compilation error
error.message;
// OK
if (error instanceof Error) {
error.message;
}
}
```
The same issue happens in the asynchronous version in Promises, but is not handled by the former option.
The linter `use-unknown-in-catch-callback-variable` rule enforces to do it:
```ts
fetch("/api").catch((error: unknown) => {});
```
Note that it is an exceptional case. In normal situations, typing callback functions parameters should not be done like this: it is the responsibility of the outer function to type the callback function, including its parameters.
## Who is `this`?
- TypeScript: [`noImplicitThis`](https://www.typescriptlang.org/tsconfig/#noImplicitThis) (in `strict`)
- ESLint: [`prefer-arrow-callback`](https://eslint.org/docs/latest/rules/prefer-arrow-callback)
- Biome: [`complexity.useArrowFunction`](https://biomejs.dev/linter/rules/use-arrow-function/) (in `recommended`)
`noImplicitThis` is also about avoiding `any`, for `this`.
```ts
class Movie {
title = "The Matrix";
displayTitle(): void {
window.setTimeout(function () {
// Runtime error in default mode,
// because `this` has changed and is no more the class instance
this.title;
}, 3000);
}
}
```
But note that it happens because the code above is not using correct and modern JavaScript. Arrow functions should be used to keep the `this` context.
```ts
class Movie {
title = "The Matrix";
displayTitle(): void {
window.setTimeout(() => {
// OK, `this` is still the class instance
this.title;
}, 3000);
}
}
```
Arrow syntax can be enforced by the linter `prefer-arrow-callback` rule.
## Should we add explicit types everywhere?
- ESLint: [`@typescript-eslint/no-inferrable-types`](https://typescript-eslint.io/rules/no-inferrable-types/) (in `stylistic`)
- Biome: [`style.noInferrableTypes`](https://biomejs.dev/linter/rules/no-inferrable-types/) (in `recommended`)
For variables assigned to primitive static values, like strings, numbers and booleans, it is superfluous and just a preference. Presets of both TypeScript ESLint and Biome enable the `no-inferrable-types` rule, which disallows explicit types in this case, to keep the code concise.
But developers from Java, C# or Rust, who are accustomed to explicit types nearly everywhere, can make the choice to do the same in TypeScript and to disable this rule.
## Required objects and arrays types
- ESLint: missing rule
- Biome: missing rule
On the other hand, **when it is a more complex structure, like arrays and objects, it is better to use explicit types**. TypeScript can always infer a type when there is a value, but the inference happens based on what the code does. So we presuppose the code is doing things right.
```ts
// Bad
const inferred = ["hello", 81];
// Good: classic array, not mixing types
const explicitArray: string[] = ["hello", "world"];
// Good: tuple (although rarely the best solution)
const explicitArray:[string, number] = ["hello", 81];
// Bad
const movieWithATypo = {
totle: "Everything everywhere all at once",
};
// Good
interface Movie {
title: string;
}
const checkedMovie: Movie = {
title: "Everything everywhere all at once",
};
```
## Required return types
- ESLint: [`@typescript-eslint/explicit-function-return-type`](https://typescript-eslint.io/rules/explicit-function-return-type)
- Biome: missing rule ([GitHub issue](https://github.com/biomejs/biome/issues/2017))
Same goes with functions: TypeScript is always able to infer the return type, but it does so based on what the function does. If the function is modified, the return type will continue to be inferred, but the modifications may have change this type by error.
The linter `explicit-function-return-type` rule enforces to explicitly type the functions returns.
It is also considered a good practice because **the return type is part of the core and minimal documentation one should include for every function**.
## Do not use _any_ library
- ESLint (in `recommended-type-checked`):
- [`@typescript-eslint/no-unsafe-argument`](https://typescript-eslint.io/rules/no-unsafe-argument)
- [`@typescript-eslint/no-unsafe-assignment`](https://typescript-eslint.io/rules/no-unsafe-assignment)
- [`@typescript-eslint/no-unsafe-call`](https://typescript-eslint.io/rules/no-unsafe-call)
- [`@typescript-eslint/no-unsafe-member-access`](https://typescript-eslint.io/rules/no-unsafe-member-access)
- [`@typescript-eslint/no-unsafe-return`](https://typescript-eslint.io/rules/no-unsafe-return)
- Biome: missing rules
Now our code has full coverage typing. But in a real world project, frameworks and libraries are also included. What if they introduced some `any`?
Some other linter `no-unsafe-xxx` rules catch when something typed as `any` is used.
But as a prior step, one should **audit libraries carefully before adding them in a project**. Accumulating not reliable enough libraries is another major recurring problems in JavaScript projects.
It can be made into **a criterion of choice: one can go see the `tsconfig.json` and the lint configuration in the library GitHub repository to check if it is typed in a strict way**.
One should not be too demanding though: currently there are probably no libraries following all the recommendations from this posts series. At the current state of the TypeScript ecosystem, having the `strict` mode and the `no-explicit-any` rule is already a lot.
## A better TypeScript lib
There is one hole left in our typing coverage: what about the types of native JavaScript functions and classes?
Few knows it, but if our code editor knows what is the type expected by `JSON.parse()` for example, it is because TypeScript includes definitions for every JavaScript native API, in what is called "libs".
In Visual Studio Code, if we cmd/ctrl click on `parse()`, we arrive in a file called `lib.es5.d.ts`, with definitions for a lot of JavaScript functions. And in this example, we see `any` as the return type.
Those `any` have a historical reason (for example, `unknown` did not exist in the very first versions of TypeScript). And correcting that now would break a lot of existing projects, so it is unlikely to happen.
But even fewer knows these definitions can be overridden. It is what does the amazing [`better-typescript-lib`](https://github.com/uhyo/better-typescript-lib) by [uhyo](https://github.com/sponsors/uhyo). And what is really magical is that one just needs to:
```bash
npm install better-typescript-lib --save-dev
```
and we are done! **Now JavaScript native APIs will be typed correctly with no more `any`**.
To be transparent: I discovered this wonder very recently. My first usages of it were successful, but I have little perspective on it yet. But it is not a big risk: in worst case scenario, just uninstall the library and that is it.
Note that the `use-unknown-in-catch-callback-variable` lint rule becomes useless with this tool.
## Dangerous assertions
- ESLint: missing rule
- Biome: missing rule
One may think that with all the rules we talked about, we could be sure of full coverage typing. Yet there are still some bad practices in TypeScript which can break type safety.
Casting with `as` tells the compiler to trust us about a type, without any check. It should be prohibited. For example:
```ts
const input = document.querySelector("#some-input") as HTMLInputElement;
// Runtime error if it is not really an input
// or if it does not exist
input.value;
// OK
if (input instanceof HTMLInputElement) {
input.value;
}
```
The worst thing which can be done is this:
```ts
movie as unknown as TVSeries;
```
TypeScript sometimes suggests to do that in some scenarios, and it is a terrible suggestion. Like `any`, it is basically bypassing all type checks and going back to blind JavaScript.
There are justified exceptions. One is when implementing a HTTP client: TypeScript cannot know the type of the JSON sent by the server, so we have to tell it. Still, we are responsible that the client forced type matches the server model.
Another one is when fixing an "any" coming from a library: casting can serve here to retype correctly.
Type predicates is just a variant of type assertions for functions returns. The most common case is when filtering an array:
```ts
/* With TypeScript <= 5.4 */
const movies: (string | undefined)[] = [];
movies
.filter((movie) => movie !== undefined)
.map((movie) => {
// string | undefined
// because TypeScript is not capable to narrow the type
// based on what the code do in `filter`
movie;
});
movies
.filter((movie): movie is string => movie !== undefined)
.map((movie) => {
// string
movie;
});
```
Nice, but the compiler trusts us. If the check does not match the type predicate, errors may happen.
While this feature can be useful and relevant in some cases, it should be double checked when used.
Note that I took the `filter` example because it is the most frequent one. But now:
```ts
/* With TypeScript >= 5.5 */
const movies: (string | undefined)[] = [];
movies
.filter((movie) => movie !== undefined)
.map((movie) => {
// string
movie;
});
```
Be sure when updating to TypeScript 5.5 to delete `movie is string`, because the behavior is not exactly the same. Explicit `movie is string` still means the compiler blindly trusts us. But the new implicit behavior is inferred from the actual code in `filter`, so now the type predicate is really checked!
It also means it becomes an exception of the linter `explicit-function-return-type` rule: in such scenarios, the return type should not be explicit.
## Next part
I hope you enjoyed the meta jokes. But we still have 2 other problems to solve:
- handle nullability
- disallow dynamic typing
Next chapters will be published soon, you can follow my account (button on top right of this page) to know when it happens.
You want to **contact me**? Instructions are available in the [summary](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln). | cyrilletuzi |
1,865,816 | TypeScript strictly typed - Part 1: configuring a project | After the introduction of this posts series, we are going to the topic's technical core. First, we... | 27,444 | 2024-06-12T16:50:22 | https://dev.to/cyrilletuzi/typescript-strictly-typed-part-1-configuring-a-project-9ca | typescript, javascript, productivity, webdev | After the [introduction](https://dev.to/cyrilletuzi/typescript-strictly-typed-intro-reliability-and-productivity-32aj) of this [posts series](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln), we are going to the topic's technical core. First, we will talk about configuration, and why **it is very important to do it at the very beginning of a project**.
We will cover:
- When to enable strict options?
- Frameworks status
- Full configuration (the hard way)
- Automatic configuration (the easy way)
## When to enable strict options?
I cannot insist more on the fact that **strict options must be enabled at the very beginning of any project**. Doing so is an easy and straightforward process: one just has to gradually type correctly when coding.
But enabling strict options in an on-going project is a completely different matter: even if TypeScript default mode is capable of inferring types in the majority of cases, the remaining untyped places are a proportion of the codebase. So the more code, the more places to fix, and it requires a clear understanding of what each code is doing.
It is one of the main recurring big errors I have seen in all the companies I have helped over the last decade as a TypeScript expert. Recovering from it is good but really time consuming and painful.
So **be sure to always check a new project is in strict mode before to start coding**.
## Frameworks status
TypeScript strict mode is enabled automatically when generating a project with the last versions of:
- [TypeScript](https://www.typescriptlang.org): `tsc --init`
- [Angular](https://angular.dev): `npm init @angular@latest`
- [React App](https://create-react-app.dev): `npx create-react-app --template typescript`
- [Next.js](https://nextjs.org): `npx create-next-app@latest`
- [Vue](https://vuejs.org): `npm create vue@latest`, then choosing TypeScript
- [Deno](https://deno.com): by default
Note **it has not always been the case with older versions of these frameworks**.
## Full configuration (the hard way)
We will see in the next parts that the "strict" mode is not enough. Other TypeScript compiler options must be enabled, as well as some lint rules.
A complete configuration would look like this:
For TypeScript, in `tsconfig.json`:
```json
{
compilerOptions: {
strict: true,
exactOptionalPropertyTypes: true,
noPropertyAccessFromIndexSignature: true,
noUncheckedIndexedAccess: true
}
}
```
For [ESLint](https://eslint.org) + [TypeScript ESLint](https://typescript-eslint.io/), with the new flat config `eslint.config.js`:
```js
export default tseslint.config(
eslint.configs.recommended,
...tseslint.configs.strictTypeChecked,
...tseslint.configs.stylisticTypeChecked,
{
languageOptions: {
parserOptions: {
project: true,
tsconfigRootDir: import.meta.dirname,
},
},
rules: {
"eqeqeq": "error",
"prefer-arrow-callback": "error",
"prefer-template": "error",
"@typescript-eslint/explicit-function-return-type": "error",
"@typescript-eslint/no-explicit-any": "error",
"@typescript-eslint/no-non-null-assertion": "error",
"@typescript-eslint/no-unsafe-argument": "error",
"@typescript-eslint/no-unsafe-assignment": "error",
"@typescript-eslint/no-unsafe-call": "error",
"@typescript-eslint/no-unsafe-member-access": "error",
"@typescript-eslint/no-unsafe-return": "error",
"@typescript-eslint/prefer-for-of": "error",
"@typescript-eslint/prefer-nullish-coalescing": "error",
"@typescript-eslint/prefer-optional-chain": "error",
"@typescript-eslint/restrict-plus-operands": ["error", {
"allowAny": false,
"allowBoolean": false,
"allowNullish": false,
"allowNumberAndString": false,
"allowRegExp": false,
}],
"@typescript-eslint/restrict-template-expressions": "error",
"@typescript-eslint/strict-boolean-expressions": ["error", {
"allowNumber": false,
"allowString": false,
}],
"@typescript-eslint/use-unknown-in-catch-callback-variable": "error",
},
});
```
For ESLint + TypeScript ESLint, with the legacy config in `.eslintrc.json`:
```json
{
"parserOptions": {
"project": true
},
"extends": [
"eslint:recommended",
"plugin:@typescript-eslint/strict-type-checked",
"plugin:@typescript-eslint/stylistic-type-checked"
],
"rules": {
"eqeqeq": "error",
"prefer-arrow-callback": "error",
"prefer-template": "error",
"@typescript-eslint/explicit-function-return-type": "error",
"@typescript-eslint/no-explicit-any": "error",
"@typescript-eslint/no-non-null-assertion": "error",
"@typescript-eslint/no-unsafe-argument": "error",
"@typescript-eslint/no-unsafe-assignment": "error",
"@typescript-eslint/no-unsafe-call": "error",
"@typescript-eslint/no-unsafe-member-access": "error",
"@typescript-eslint/no-unsafe-return": "error",
"@typescript-eslint/prefer-for-of": "error",
"@typescript-eslint/prefer-nullish-coalescing": "error",
"@typescript-eslint/prefer-optional-chain": "error",
"@typescript-eslint/restrict-plus-operands": ["error", {
"allowAny": false,
"allowBoolean": false,
"allowNullish": false,
"allowNumberAndString": false,
"allowRegExp": false
}],
"@typescript-eslint/restrict-template-expressions": "error",
"@typescript-eslint/strict-boolean-expressions": ["error", {
"allowNumber": false,
"allowString": false
}],
"@typescript-eslint/use-unknown-in-catch-callback-variable": "error"
}
}
```
For [Biome](https://biomejs.dev/linter/), in `biome.json`:
```json
{
"linter": {
"enabled": true,
"rules": {
"recommended": true,
"style": {
"useForOf": "error"
}
}
}
}
```
Note that Biome is a promising but recent tool and that not all the lint rules we will discuss exist yet.
For [Deno](https://lint.deno.land), in `deno.json`:
```json
{
"compilerOptions": {
"exactOptionalPropertyTypes": true,
"noPropertyAccessFromIndexSignature": true,
"noUncheckedIndexedAccess": true,
"useUnknownInCatchVariables": true
},
"lint": {
"rules": {
"tags": [
"recommended"
],
"include": [
"eqeqeq",
"explicit-function-return-type",
"no-non-null-assertion"
]
}
}
}
```
Also note that these configuration examples only include options and rules related to this posts series topic. Other options and rules may be added to enforce other TypeScript good practices not related to strict typing.
For all tools, **be careful if a configuration extends another one**. It could mean that even if a preset like `strict` is enabled, one of the individual option included in the preset is disabled in the parent configuration. So in this case, all options should be enabled individually.
## Automatic configuration (the easy way)
Totally optional, but if one does not want to lose time to remember and configure all these options manually, one can run this command:
```bash
npx typescript-strictly-typed@latest
```
It is [a tool I published](https://github.com/cyrilletuzi/typescript-strictly-typed) to automatically add all the strict options in a TypeScript project.
### Next part
In the [next part](https://dev.to/cyrilletuzi/typescript-strictly-typed-part-2-full-coverage-typing-4cg1) of this posts series, we will explain and solve the first problem of TypeScript default behavior: from partial to full coverage typing.
You want to **contact me**? Instructions are available in the [summary](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln). | cyrilletuzi |
1,865,810 | TypeScript strictly typed - Intro: reliability and productivity | Before going to the technical core of this posts series, we said in the summary that by default... | 27,444 | 2024-06-12T16:48:13 | https://dev.to/cyrilletuzi/typescript-strictly-typed-intro-reliability-and-productivity-32aj | typescript, javascript, productivity, webdev | Before going to the technical core of this posts series, we said in the [summary](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln) that by default TypeScript:
- **only partially enforces typing**
- **does not handle nullability**
- **retains some JavaScript's dynamic typing**
We will explain these 3 problems and their solution in the next parts, but first, why is it important to solve them? Developers coming from Java, C# or Rust may not need to be convinced, and could skip this introduction.
We will cover:
- TypeScript true promise
- Reliability: bugs reduction
- Productivity: easier and faster debug
- Productivity: better autocompletion
- Productivity: less tests to write
- Scalability: safer refactoring
- Design: better and simpler code
- Put into perspective
## TypeScript true promise
Having a code as correct as possible is not about being picky or about wanting a pretty code. It has very important and concrete consequences for a company.
Imagine one finds a magic box which can guess the lottery numbers. They just press the obvious big button on it and it guesses 3 out of 6 lottery numbers.
Now they turn the box upside down and press the little and barely visible secret button with "strict" written on it. Now the box guesses all the 6 lottery numbers.
**Using TypeScript with its default behavior is basically the same as using the magic box without the secret button.**
So answering why enforcing static, strong and complete typing is important is the same as answering why TypeScript is important. Once it is clear, it is just common sense to **use TypeScript to its maximum potential**.
## Reliability: bugs reduction
It is the most obvious benefit:
- JavaScript: 0% code verified, 100% risk of bugs
- TypeScript default mode: ~60% code verified, 40% risk of bugs
- **TypeScript strictly typed: ~100% code verified, 0% risk of bugs**
To be clear:
- ~60% is a rough estimate from my experience
- 0% risk of bugs = 0% risk of bugs which are handled by strong and static types, but of course there are other types of bugs which are still possible
Put in a real world context, where front-end teams are often new small teams, **the maintenance costs are very important**. If a team is made up of only 3 people, and 2 of them use all of their time to fix bugs, it means there is only one person left to add new product features.
## Productivity: easier and faster debug
To check the code, TypeScript introduces a compilation step, like in other typed languages like Java, C# or Rust. And in TypeScript, compilation is happening in "watch" mode, while one is coding.
It is **a totally different experience when it comes to debugging**. Let us take a very basic example:
```ts
document.querySelector('#missing-id').textContent = "The Matrix";
```
With TypeScript strictly typed, the error is shown directly and immediately as one is coding (via the editor or via the compilation logs). There may even be a suggestion about how to fix the issue. **It takes a few seconds.**
Now going back to the raw JavaScript experience: everything seems OK in the editor. One has to launch a development server, go in the browser and open the console. Yet it is not enough: the console logs may be totally OK at this point. One has to reproduce the steps to trigger the scenario where the faulty code is called.
We are now talking about **minutes of debugging**, which can extend to hours.
And now imagine the faulty code is called in a scenario which does not happen often or which happens only under specific conditions. So it goes totally unnoticed while developing in local environment, and a bug is pushed to production.
## Productivity: better autocompletion
If TypeScript is able to check all the code because everything is correctly typed, it also means the editor can help with autocompletion everywhere.
Once one goes back to `any`, the editor becomes blind, and cannot assist the developer anymore.
Interesting fact: if editor autocompletion in JavaScript is far better than some years ago, it is because it is now handled by TypeScript, even for pure JavaScript files!
So in some sense, like it or not, **everyone is doing TypeScript today, and it is just a waste to not go for its full potential**.
## Productivity: less tests to write
If one is talking about testing strategies, but TypeScript is not in a strictly typed configuration, priorities may have to be reconsidered.
A very common and indicative case are unit tests checking unexpected `undefined` values: **with TypeScript strictly typed, it cannot happen at all, so it does not need to be tested**!
Everyone who has already written tests in a front-end project knows how time consuming it is. Also, the more tests = the more time the continuous integration tools (like GitHub Actions or else) take. And as these tools are not free, **the more it costs to the company**.
## Scalability: safer refactoring
For the same reasons as for bugs, **refactoring is a lot easier when in TypeScript strictly typed**, because if one breaks something while refactoring, compilation will see it and notify it right away.
The accumulation of technical debt being one of the other major problems of most projects, being able to easily evolve is essential.
## Design: better and simpler code
This benefit is rarely evoked, but I realized with experience that **TypeScript is also a good indicator when designing code**.
Too difficult to express the type of a variable? One may have chosen the wrong data structure, or a too nested one which would be easier to work with if it was flattened.
Too difficult to express the signature of a function? It may do too much things and not respect the single responsibility principle, or it may try to abstract too much.
## Put into perspective
While the options names like "strict", which we will discuss in the next parts, may suggest it is an additional effort to do, it is not: enabling all the strict options we will discuss is just **putting JavaScript at an equivalent level than the basic and default mode of the other typed languages** like Java, C# or Rust.
One could say that it is TypeScript default mode which is a "loose" mode, while **"strict" mode is just the normal mode if one wants to use strong and static types**, which is what TypeScript is for in the first place.
### Next part
In the [next part](https://dev.to/cyrilletuzi/typescript-strictly-typed-part-1-configuring-a-project-9ca) of this posts series, we will explain how to configure a project to guarantee strict typing, and especially when it is important to do it.
You want to **contact me**? Instructions are available in the [summary](https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln). | cyrilletuzi |
1,844,050 | TypeScript strictly typed | The problem Over the last decade, as a JavaScript expert, I helped companies of all kinds... | 27,444 | 2024-06-12T16:45:52 | https://dev.to/cyrilletuzi/typescript-strictly-typed-5fln | typescript, javascript, productivity, webdev |
## The problem
Over the last decade, as a JavaScript expert, I helped companies of all kinds and sizes. Over time, I detected a series of some recurring major problems in nearly all projects.
One of them is **a lack of typing, resulting in a lack of reliability and an exponential decline in productivity**.
Yet, all these projects were coded in [TypeScript](https://www.typescriptlang.org). Should not it guarantee typing like in Java, C# or Rust?
Short answer: no, because by default TypeScript:
- **only partially enforces typing**
- **does not handle nullability**
- **retains some JavaScript's dynamic typing**
These problems can be solved with adequate configuration and the resulting good practices. But for that, **even strict mode**, if one knows about it, **is not enough**.
This posts series claims to be **a reference about a strong, static and complete typing in TypeScript**, and I will try to keep it up to date.
### Target audience
This posts series is intended for developers who already know TypeScript and who:
- do not know about strict mode
- do know about strict mode but think it is enough to guarantee sufficient typing
- know languages like Java, C# or Rust and want a similar typing level in TypeScript
- **want to increase reliability of their code** and reduce the risk of bugs
- **want to increase productivity**
This posts series is not intended for people who:
- do not like TypeScript and already have a definitive opinion about it
### Contact
If you want a direct discussion with me:
- **preferably via [LinkedIn](https://www.linkedin.com/in/cyrilletuzi/)** (if you cannot send me a message directly, please add a note to your contact request)
- direct message on [X (Twitter)](https://x.com/cyrilletuzi)
### Ongoing series
Not all posts are published yet. You can follow my account (button on top right of this page) to know when next parts are published.
### French version
[A French version is available on LinkedIn.](https://www.linkedin.com/pulse/typescript-strictement-typ%25C3%25A9-cyrille-tuzi-k5ide/)
### Next part
Before going into the topic's technical core, we will start this posts series with an [introduction](https://dev.to/cyrilletuzi/typescript-strictly-typed-intro-reliability-and-productivity-32aj) about why solving the 3 problems above is important for **reliability and productivity**. | cyrilletuzi |
1,885,942 | VM cannot access internet via NAT VirtualBox | My Problem My Ubuntu Virtual Machine can`t access internet using NAT interface ... | 0 | 2024-06-12T16:44:30 | https://dev.to/bukanspot/vm-cannot-access-internet-via-nat-virtualbox-27f4 | virtualbox | ## My Problem
My Ubuntu Virtual Machine can`t access internet using NAT interface
## My Solution
check IP address configuration
```bash
sudo nano /etc/netplan/00-installer-config.yaml
```
remove gateway and save
finally apply the configuration
```bash
sudo netplan apply
```
| bukanspot |
1,885,923 | The Developer's Guide (2024)! Which Blockchain is Best for Developers? | Blockchain technology has revolutionized various industries by offering decentralized and secure... | 0 | 2024-06-12T16:21:31 | https://dev.to/eliza_smith_/the-developers-guide-2024-which-blockchain-is-best-for-developers-1hg8 |
Blockchain technology has revolutionized various industries by offering decentralized and secure solutions. For developers, choosing the right blockchain platform is critical as it can significantly impact the efficiency and success of their projects. In this article, we will explore several prominent blockchains and analyze their suitability for developers based on various factors.
Understanding Blockchain for Development
Before diving into specific blockchains, it's essential to understand what blockchain technology entails. A blockchain is a distributed ledger that records transactions across many computers in such a way that the registered transactions cannot be altered retroactively. Developers play a crucial role in this ecosystem as they create and maintain the decentralized applications (dApps) that run on these blockchains.
Key Factors for Choosing a Blockchain
When selecting a blockchain for development, several key factors must be considered:
Scalability: The ability to handle a growing amount of work or its potential to accommodate growth.
Security: Measures and protocols in place to protect against breaches and attacks.
Development Tools and Support: Availability of development kits, documentation, and support.
Community and Ecosystem: A robust community that contributes to the platform's development and provides support.
Cost and Transaction Fees: The expenses involved in deploying and running applications.
Ethereum: The Pioneer of Smart Contracts
Overview of Ethereum
Ethereum is often hailed as the pioneer of smart contracts and dApps. It allows developers to create decentralized applications using its robust ecosystem.
Advantages for Developers
Ethereum provides a mature and well-documented platform with extensive resources and a large developer community.
Development Tools
Solidity: A high-level programming language designed for writing smart contracts.
Remix: An online IDE for developing and deploying smart contracts.
Truffle: A comprehensive development framework.
Ecosystem and Community Support
Ethereum boasts a vast community that continuously contributes to its development and offers extensive support to new developers.
Binance Smart Chain: High Performance and Low Fees
Introduction to Binance Smart Chain
Binance Smart Chain (BSC) is known for its high performance and low transaction fees, making it an attractive option for developers.
Benefits for Developers
BSC offers faster transaction speeds and significantly lower fees compared to Ethereum.
Key Development Tools
Binance SDK: A set of tools for developing on BSC.
BscScan: A blockchain explorer for BSC.
Comparison with Ethereum
While Ethereum is more established, BSC's low fees and high performance make it a competitive alternative.
Polkadot: Interoperability and Scalability
What is Polkadot?
Polkadot aims to enable different blockchains to transfer messages and value in a trust-free fashion; it is known for its interoperability and scalability.
Developer Advantages
Polkadot provides a highly scalable environment and supports cross-chain interactions.
Development Environment and Tools
Substrate: A framework for building custom blockchains.
Polkadot JS: Tools and libraries for interacting with the Polkadot network.
Unique Features
Polkadot's parachains allow for parallel transaction processing, significantly enhancing scalability.
Solana: Speed and Efficiency
Overview of Solana
Solana is renowned for its high throughput and efficiency, making it a preferred choice for developers needing fast transaction speeds.
Why Developers Might Choose Solana
Solana offers some of the fastest transaction speeds in the blockchain space, which is crucial for applications requiring quick processing times.
Available Development Tools
Solana SDKs: Development kits for various programming languages.
Solana Beach: A comprehensive blockchain explorer.
Community and Growth
Solana's community is growing rapidly, with numerous projects and developers joining the ecosystem.
Cardano: Research-Driven and Secure
Introduction to Cardano
Cardano takes a research-driven approach to blockchain technology, emphasizing security and sustainability.
Developer-Friendly Features
Cardano offers a secure and scalable environment, with a focus on formal verification to ensure the correctness of smart contracts.
Development Tools and Environment
Plutus: A smart contract platform for Cardano.
Marlowe: A domain-specific language for financial contracts.
Security and Scalability
Cardano's layered architecture enhances both security and scalability, making it a reliable choice for developers.
Tezos: On-Chain Governance and Upgradability
What Makes Tezos Unique?
Tezos is distinguished by its on-chain governance and self-amending capabilities, which allow the network to upgrade itself without hard forks.
Developer Benefits
Tezos provides a stable environment with robust governance features, making it an excellent choice for long-term projects.
Tools and Resources
SmartPy: A Python library for smart contract development.
Tezos Academy: An educational platform for learning Tezos development.
Governance and Self-Amending Protocol
Tezos' governance model allows stakeholders to vote on protocol upgrades, ensuring continuous improvement.
Avalanche: Highly Scalable and Customizable
Overview of Avalanche
Avalanche is known for its high scalability and customizable blockchain solutions.
Key Advantages for Developers
Avalanche's consensus protocol allows for high throughput and near-instant finality.
Development Tools and SDKs
Avalanche X: A suite of tools and resources for developers.
Avalanche Explorer: A tool for monitoring and exploring Avalanche transactions.
Use Cases and Community
Avalanche's versatility makes it suitable for various use cases, and its community is active and supportive.
Hyperledger Fabric: Permissioned Blockchain for Enterprises
Introduction to Hyperledger Fabric
Hyperledger Fabric is a permissioned blockchain platform designed for enterprise use.
Benefits for Enterprise Developers
Fabric offers high levels of privacy and security, which are crucial for enterprise applications.
Tools and Support
Hyperledger Composer: A set of tools for developing blockchain business networks.
Hyperledger Caliper: A benchmark tool for evaluating blockchain performance.
Comparison with Public Blockchains
While public blockchains offer decentralization, Hyperledger Fabric's permissioned nature provides enhanced control and privacy.
Cosmos: The Internet of Blockchains
What is Cosmos?
Cosmos aims to create an "Internet of Blockchains" by facilitating communication and interaction between different blockchains.
Advantages for Developers
Cosmos provides a highly scalable and interoperable environment for developers.
Development Tools
Cosmos SDK: A framework for building custom blockchains.
Tendermint: A consensus engine powering Cosmos.
Interoperability and Scalability
Cosmos' architecture allows for seamless interoperability between blockchains, enhancing scalability and usability.
Comparison Table of Blockchains
Conclusion
Choosing the right blockchain for development depends on your specific needs, such as scalability, security, and available development tools. Ethereum remains a popular choice for its extensive ecosystem, while platforms like Binance Smart Chain and Solana offer lower fees and higher performance. Cardano and Tezos provide robust security and governance features, making them suitable for more conservative projects. Ultimately, the best blockchain for you will align with your project's requirements and your development goals.
FAQs
What is the most developer-friendly blockchain?
Ethereum is considered highly developer-friendly due to its extensive resources, tools, and large community.
Which blockchain has the lowest transaction fees for developers? Binance Smart Chain and Solana are known for their low transaction fees, making them cost-effective for developers.
[Which is the Best Blockchain Development Company?
](https://wisewaytec.com/blockchain-development-company/)Wisewaytec is ranked as the best [blockchain development company](https://wisewaytec.com/blockchain-development-company/), with experienced developers of 6+ years. The company is based in Mohali and has over 10 years of experience in building software solutions. It has deep expertise in custom blockchain app development and integration.
How do I choose the right blockchain for my project?
Consider factors like scalability, security, development tools, community support, and transaction fees to choose the best blockchain for your project.
What are the best development tools for blockchain development?
Tools like Solidity, Remix, Truffle (for Ethereum), Binance SDK, Solana SDKs, and Cosmos SDK are among the best for blockchain development. | eliza_smith_ | |
1,885,941 | 125. Valid Palindrome | Topic: Arrays & Hashing Soln 1 (isalnum): A not so efficient solution: create a new list to... | 0 | 2024-06-12T16:43:54 | https://dev.to/whereislijah/125-valid-palindrome-4lc6 | Topic: Arrays & Hashing
Soln 1 (isalnum):
A not so efficient solution:
1. create a new list to store the palindrome
2. loop through the characters in the string:
- check if it is alphanumeric, if it is then append to list
3. assign a variable, then convert palindrome list to string
4. assign another variable, then reverse palindrome
5. return and compare both variables
```
def isPalindrome(self, s: str) -> bool:
palin = []
for c in s:
if c.isalnum():
palin.append(c.lower())
x = ''.join(palin)
y = x[::-1]
return x == y
```
Soln 2 (isalnum):
1. Filter and Normalize: Create palindrome by joining all alphanumeric characters from s and converting them to lowercase.
2. Check Palindrome: Return True if palindrome is equal to its reverse, otherwise return False.
```
def isPalindrome(self, s: str) -> bool:
palindrome = ''.join(filter(str.isalnum, s)).lower()
return palindrome == palindrome[::-1]
```
Notes: Attempt to understand 2 pointer solution. | whereislijah | |
1,885,928 | Trying Ratatui TUI: Rust Text-based User Interface Apps | Trying Ratatui TUI 🧑🏽🍳 building a text-based UI number game in the Terminal 🖥️ in Rust with Ratatui immediate mode rendering. | 0 | 2024-06-12T16:42:23 | https://rodneylab.com/trying-ratatui-tui/ | rust, gamedev, tui | ---
title: "Trying Ratatui TUI: Rust Text-based User Interface Apps"
published: "true"
description: "Trying Ratatui TUI 🧑🏽🍳 building a text-based UI number game in the Terminal 🖥️ in Rust with Ratatui immediate mode rendering."
tags: "rust, gamedev, tui"
canonical_url: "https://rodneylab.com/trying-ratatui-tui/"
cover_image: "https://dev-to-uploads.s3.amazonaws.com/uploads/articles/y2spcub5vyvd8gxr3r3c.png"
---
## Ratatui and Text-based User Interfaces
I have been trying Ratatui TUI, a Rust crate for building Text-based User Interface (**TUI**) apps, which typically run in the Terminal. Ratatui, along with Go-based Bubble Tea might be responsible for the recent growth in TUIs. Some examples of TUI apps are **Lazygit**, glow, **Soft Serve**, **ATAC** and rlt. C++ programmers are not left out — FTXUI is a modern C++ library for building TUIs.
You use the Ratatui crate to build command line apps in Rust, though it is a little different to other Rust libraries like clap and inquire. **clap** focusses on managing and parsing command line flags (its name is an acronym: Command Line Argument Parser). **inquire**, is designed for interacting with the user, prompting them for information via the command line. Ratatui is different to both, and gives you more control over the text-based app’s user interface layout and handling interaction.
## 🧑🏽🎓 Ratatui Learning Resources
Ratatui is a powerful library, so there is a little to learn, and the project provides three beginner tutorials to help flatten the learning curve. These are:
- <a href="https://ratatui.rs/tutorials/hello-world/">Ratatui Hello World Tutorial</a>, which is a good starting point if you are quite new to the Rust ecosystem;
- <a href="https://ratatui.rs/tutorials/counter-app/">Counter App</a>, which takes things up a level and introduces immediate mode rendering; and
- <a aria-label="J S O N editor" href="https://ratatui.rs/tutorials/json-editor/">JSON Editor</a>, which introduces more sophisticated layouts.
If this is your first Rust app, you might want to start with either <a href="https://rust-cli.github.io/book/index.html">Command line app in Rust</a>, or probably <a href="https://doc.rust-lang.org/stable/book/">The Rust Programming Language</a>, both free web books.
## 🧱 What I Built
After following the tutorials, a nice extension was to create a basic numbers game, inspired by the <a href="https://en.wikipedia.org/wiki/Countdown_(game_show)#Numbers_Round">UK TV Countdown quiz</a>. For this arithmetic challenge, the player randomly picks six numbers, then using +, -, * and / operators, tries to arrive at a target.
This little game provided a natural extension to the JSON editor tutorial, mentioned above.
## ⚙️ Project setup
Beyond the `ratatui` and `crossbeam` crates used in the JSON tutorial, I added `num_parser` and `rand`. Naturally, `rand` was useful for generating the target and helping select the six, initial numbers.
```toml
[package]
name = "countdown-numbers"
version = "0.1.0"
edition = "2021"
license = "BSD-3-Clause"
repository = "https://github.com/rodneylab/countdown-numbers"
rust-version = "1.74"
description = "Trying Ratatui TUI 🧑🏽🍳 building a text-based UI number game in the Terminal 🖥️ in Rust with Ratatui immediate mode rendering."
[dependencies]
crossterm = "0.27.0"
num_parser = "1.0.2"
rand = "0.8.5"
ratatui = "0.26.3"
```
I set the game up, so the player typed in their solution attempt, with their chosen numbers, using familiar algebraic notation. For example, let’s say the target is `326` and the six numbers are `1`, `2`, `2`, `75`, `50` and `25`. Here, it is possible to reach the target exactly, and the player could enter their solution into the Ratatui app as:
```plaintext
(2 * 2 * 75) + 25 + 1
```
The `num_parser` crate can parse that expression and yield the result (`326`), significantly reducing the number of lines of code I had to write.
That was all I needed for dependencies: `crossterm`, `num_parser`, `rand` and `ratatui`.
## 🧑🏽🍳 What I Liked about Ratatui
### 📚 Fantastic Docs
The three tutorials are very well written, and provide a great introduction to using Ratatui, including unit testing your app. Beyond the tutorials, I found the <a href="https://docs.rs/ratatui/latest/ratatui/">official Ratatui API docs</a> were detailed enough to solve all the queries I had as I built the app.
### 📦 Leveraging crates.io
Being able to leverage the Rust crate ecosystem was a huge help. I mentioned `num_parser` did a lot of heavy-lifting. This was quick to <a href="https://crates.io/crates/num_parser">find `num_parser` using crates.io</a>. Although a similar C++ library might exist, I don’t think I could have found it so easily. I am not familiar enough with the Go ecosystem to comment on how that would have worked out for me, drop a comment below if you are familiar, or if you are a C++ aficionado, and know an easy way to find C++ libraries.
### 🖥️ Trying Ratatui TUI: Immediate Mode
I kept the app structure from the JSON tutorial, that is, with three main source files:
- `src/main.rs`: contains the main loop, draws the UI and listens for UI events, immediately calling app methods;
- `src/app.rs`: manages app state and provides helper functions the app calls on user event; and
- `src/ui.rs`: generates the UI based on the current app state.
The immediate mode pattern worked well, writing how the app UI should look for any given state, with Rust pattern matching helping me get going quicker, making sure I covered all possible states, with no surprises.
As an example of how this worked, we might look at the initial number picking. The player presses <kbd>[</kbd> to pick a small number and <kbd>]</kbd> for a large one. These key presses are captured in event listener code in <code>src/main.rs</code>:
```rust
match app.current_screen {
CurrentScreen::Introduction => {
if key.code == KeyCode::Enter {
app.current_screen = CurrentScreen::PickingNumbers;
}
}
CurrentScreen::PickingNumbers => match key.code {
KeyCode::Enter => {
if app.is_number_selection_complete() {
app.current_screen = CurrentScreen::Playing;
}
}
KeyCode::Char(']') => {
app.pick_random_large_number();
}
KeyCode::Char('[') => {
app.pick_random_small_number();
}
_ => {}
},
// TRUNCATED...
}
```
So pressing those square bracket keys triggers an app state update (`src/app.rs`):
```rust
pub fn pick_random_large_number(&mut self) {
if let Some(index_value) = self.random_available_large_number_index() {
let result = self.available_large_numbers[index_value];
let picked_index = self.selected_numbers.iter().position(|&val| val.is_none());
if let Some(picked_index_value) = picked_index {
if result.is_some() {
self.selected_numbers[picked_index_value] = result;
self.available_large_numbers[index_value] = None;
};
}
}
}
```
Then the UI model is updated (`src/ui.rs`):
```rust
fn create_selected_numbers_block(app: &App) -> Paragraph {
let mut selected_numbers_text = app.selected_numbers.into_iter().fold(
vec![Span::styled("Numbers: ", Style::default())],
|mut accum, val| {
if let Some(value) = val {
accum.push(Span::styled(
format!("{value} "),
Style::default().fg(Color::Green),
));
} else {
accum.push(Span::styled("_ ", Style::default().fg(Color::Green)));
};
accum
},
);
// TRUNCATED...
}
```
Hence, the current app state gets reflected on the next enumeration of the event loop.
There is a link further down to the complete code for the project.
## 🏁 Trying Ratatui TUI: What Next?
So far, I have a minimal proof of concept. I would like to remove some rough edges. In particular:
- add some fireworks to make the victory screen feel a little more of a celebration;
- add sound feedback when the user hits keys; and
- improve gameplay.
For improving gameplay, there are already different messages depending on how close to the target you got. However, I would like to take this to the next level, adding a game timer and putting best times on a high-score board. This definitely provides motivation for me playing <a href="https://apps.apple.com/gb/app/sudoku-pi/id6467504425">Sudoku Pi (also written in Rust)</a>, and I hope it will translate to this game.
## 🙌🏽 Trying Ratatui TUI: Wrapping Up
In this post on trying Ratatui TUI, we looked got an introduction to immediate mode user interfaces in Rust. In particular, we saw:
- TUI **alternatives to Rust’s Ratatui** in Go and C++;
- other **Rust Terminal app tooling** and how Ratatui is different; and
- some **learning resources for getting started with Ratatui**.
I hope you found this useful. As promised, you can <a href="https://github.com/rodneylab/countdown-numbers">get the full project code on the Rodney Lab GitHub repo</a>. I would love to hear from you, if you are also new to Rust game development. Do you have alternative resources you found useful? How will you use this code in your own projects?
## 🙏🏽 Trying Ratatui TUI: Feedback
If you have found this post useful, see links below for further related content on this site. Let me know if there are any ways I can improve on it. I hope you will use the code or starter in your own projects. Be sure to share your work on X, giving me a mention, so I can see what you did. Finally, be sure to let me know ideas for other short videos you would like to see. Read on to find ways to get in touch, further below. If you have found this post useful, even though you can only afford even a tiny contribution, please <a aria-label="Support Rodney Lab via Buy me a Coffee" href="https://rodneylab.com/giving/">consider supporting me through Buy me a Coffee</a>.
Finally, feel free to share the post on your social media accounts for all your followers who will find it useful. As well as leaving a comment below, you can get in touch via <a href="https://twitter.com/messages/compose?recipient_id=1323579817258831875">@askRodney</a> on X (previously Twitter) and also, join the <a href="https://matrix.to/#/%23rodney:matrix.org">#rodney</a> Element Matrix room. Also, see <a aria-label="Get in touch with Rodney Lab" href="https://rodneylab.com/contact/">further ways to get in touch with Rodney Lab</a>. I post regularly on <a href="https://rodneylab.com/tags/gaming/">Game Dev</a> as well as <a href="https://rodneylab.com/tags/rust/">Rust</a> and <a href="https://rodneylab.com/tags/c++/">C++</a> (among other topics). Also, <a aria-label="Subscribe to the Rodney Lab newsletter" href="https://newsletter.rodneylab.com/issue/latest-issue">subscribe to the newsletter to keep up-to-date</a> with our latest projects.
| askrodney |
1,885,865 | Using Arktype in Place of Zod - How to Adapt Parsers | Ever since I started using Zod, a TypeScript-first schema declaration and validation library, I've... | 27,704 | 2024-06-12T16:37:14 | https://dev.to/seasonedcc/using-arktype-in-place-of-zod-how-to-adapt-parsers-3bd5 | typescript, zod, arktype, migration | Ever since I started using [Zod](https://github.com/colinhacks/zod/), a TypeScript-first schema declaration and validation library, I've been a big fan and started using it in all my projects. Zod allows you to ensure the safety of your data at runtime, extending TypeScript’s type-checking capabilities beyond compile-time. Whenever I need to validate data from an outside source, such as an API, `FormData`, or URL, Zod has been my go-to tool.
I [created](https://github.com/gustavoguichard/string-ts/), [co-created](https://github.com/seasonedcc/composable-functions/), and [worked](https://github.com/seasonedcc/remix-forms) on entire OSS libraries that are based on the principle of having strong type checking at both type and runtime levels.
## A newfound love
[Arktype](https://github.com/arktypeio/arktype) has been on my radar for a while now, it offers similar validation capabilities but with some unique features that caught my eye, like the way it lets you define validators using the same syntax you use to define types.
I finally got the chance to use it in a project, and it was delightful.
The deal is that I'm using those Zod based libraries in the project, and I wanted to see how I could adapt them to use Arktype where they expect a schema.
I never wanted to have a tight coupling between the libraries and Zod, so instead of having Zod as a dependency, I'd expect a subset of a Zod schema.
```ts
// instead of:
function validate<T>(schema: ZodSchema<T>): T {
// ...
}
// I'd expect something like:
function validate<T>(schema: { parse: (val: unknown) => T }): T {
// ...
}
```
The validate function now accepts a generic schema that only requires a parse method. This decouples our code from Zod, allowing us to use other libraries with minimal changes.
It turns out this has just proven to be a great idea.
## The libraries I'm adapting for
In this project, I'm using two Zod-based libraries, which are:
### [make-service](https://github.com/gustavoguichard/make-service)
This lib uses Zod to validate an API response - among other nice features -, which is useful to ensure the data expectations are correct.
**Check out a code sample without the library**:
```ts
const response = await fetch('https://example.com/api/users', {
headers: {
Authorization: 'Bearer 123',
},
})
const users = await response.json()
// ^? any
```
**And with it**:
```ts
const service = makeService('https://example.com/api', {
headers: {
Authorization: 'Bearer 123',
},
})
const response = await service.get('/users')
const users = await response.json(usersSchema)
// ^? User[]
```
### [composable-functions](https://github.com/seasonedcc/composable-functions/)
This is a library to allow function composability and monadic error handling. If you don't know it yet, think about a smaller/simpler [Effect](https://github.com/Effect-TS) which has runtime type checking backed in by Zod.
Here follows a didactic example of how to define a function that doubles a number and does runtime type-checking:
```ts
import { withSchema } from 'composable-functions'
const safeDouble = withSchema(z.number())((n) => n * 2)
```
## The difference between the libraries
When going into the libs source we can see that they use different subsets of Zod. The first one expects the already mentioned:
```ts
type Schema<T> = { parse: (d: unknown) => T }
```
While the second one expects the following code which is a subset of Zod's `SafeParseError | SafeParseSuccess`:
```ts
type ParserSchema<T = unknown> = {
safeParse: (a: unknown) =>
| {
success: true
data: T
}
| {
success: false
error: {
issues: ReadonlyArray<{
path: PropertyKey[]
message: string
}>
}
}
}
```
Which is a bit more complex, but still, it's just a subset of Zod.
## **TDD**: _Type Driven Development_ 😄
When investigating on how to extract the type out of an Arktype schema, I found out you can do:
```ts
import { Type } from 'arktype'
type Example = Type<{ name: string }>
type Result = Example['infer']
// ^? { name: string }
```
Therefore, I could go on and create one adaptor for each library but this is a case where I can join both expectations in the same function. In fact, what I need is a function that conforms to this return type:
```ts
import { Type } from 'arktype'
import { ParserSchema } from 'composable-functions'
import { Schema } from 'make-service'
declare function ark2zod<T extends Type>(
schema: T,
): Schema<T['infer']> & ParserSchema<T['infer']>
```
## The implementation
Having started from the types above, the solution was quite straightforward.
I hope the code with comments below speaks for itself:
```ts
import { type, Type } from 'arktype'
import { ParserSchema } from 'composable-functions'
import { Schema } from 'make-service'
function ark2zod<T extends Type>(
schema: T,
): Schema<T['infer']> & ParserSchema<T['infer']> {
return {
// For `make-service` lib:
parse: (val) => schema.assert(val),
// For `composable-functions` lib:
safeParse: (val: unknown) => {
// First, we parse the value with arktype
const data = schema(val)
// If the parsing fails, we only need what ParserSchema expects
if (data instanceof type.errors) {
// The ArkErrors will have a shape similar to Zod's issues
return { success: false, error: { issues: data } }
}
// If the parsing succeeds, we return the successful side of ParserSchema
return { success: true, data }
},
}
}
export { ark2zod }
```
> Special thanks to [David Blass](https://x.com/ssalbdivad) - ArkType's creator - who reviewed and suggested a leaner version of this adapter.
## Usage
Using the function above I was able to create my composable functions with `make-service`'s service using Arktype schemas seamlessly:
```ts
import { type } from 'arktype'
import { withSchema } from 'composable-functions'
import { ark2zod } from '~/framework/common'
import { blogService } from '~/services'
const paramsSchema = type({
slug: 'string',
username: 'string',
})
const postSchema = type({
title: 'string',
body: 'string',
// ...
})
const getPost = withSchema(ark2zod(paramsSchema))(
async ({ slug, username }) => {
const response = await blogService.get('articles/:username/:slug', {
params: { slug, username },
})
const json = await response.json(ark2zod(postSchema))
return json
},
)
export { getPost }
```
When using the `getPost` function, my result will be strongly typed at both type and runtime levels or it will be a `Failure`:
```ts
export function loader({ params }: LoaderFunctionArgs) {
const result = await getPost(params)
if (!result.success) {
console.error(result.errors)
throw notFound()
}
return result.data
// ^? { title: string, body: string, ... }
}
```
## Final thoughts
I hope this post was helpful to you, not only to understand how to adapt Zod-based libraries but also to understand how we at [Seasoned](https://seasoned.cc) approach problems. If you have any questions or have gone through a similar migration, I’d love to hear about your experiences and any tips you might have.
One thing I can assure you is that we love TS and we like to be certain about our data, be it at compile time or runtime. | gugaguichard |
1,885,929 | Day 16 of my progress as a vue dev | About today Today took my time to think about the next project I wanna take and continue with. Did my... | 0 | 2024-06-12T16:35:41 | https://dev.to/zain725342/day-16-of-my-progress-as-a-vue-dev-46af | webdev, vue, typescript, tailwindcss | **About today**
Today took my time to think about the next project I wanna take and continue with. Did my research and because I didn't wanna dive right into a project without considering a few factors. I don't want to take on a project that doesn't add on to me learning and I also don't wanna dive into something that ends up being dull and boring for me as a developer.
**What's next?**
So, I have a project in mind but I think I need to do a little bit more research because the project I wanna take on is of nature and includes processes I'm not much familiar with. Basically I wanna work on a version of an online audio editor and this is something I think is going to be challenging and fun.
**Improvements required**
I need to polish my concepts on file handling and audio management. Also, I need to create a structural approach with which I will be diving into this project and a timeline that I will follow to work on this project and conclude it timely.
Wish me luck! | zain725342 |
1,876,989 | Join us for the Twilio Challenge: $5,000 in Prizes! | We are so delighted to partner with Twilio for a new DEV challenge. Running through June 23, the... | 0 | 2024-06-12T16:32:19 | https://dev.to/devteam/join-us-for-the-twilio-challenge-5000-in-prizes-4fdi | devchallenge, twiliochallenge, ai, twilio | ---
title: Join us for the Twilio Challenge: $5,000 in Prizes!
published: true
description:
tags: devchallenge, twiliochallenge, ai, twilio
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tvm2d9d8gdp37qxv0lu9.png
# Use a ratio of 100:42 for best results.
# published_at: 2024-06-04 18:10 +0000
---
We are so delighted to partner with [Twilio](https://www.twilio.com/try-twilio?utm_campaign=Developer&utm_medium=partner&utm_source=twilio&utm_content=Twilio_AI_Challenge_June_12th_2024) for a new DEV challenge.
Running through **June 23**, the [Twilio Challenge](https://dev.to/challenges/twilio) is all about combining the power of AI with the magic of Twilio. We have one prompt for this challenge but four ways to win.
From Messaging to Voice Intelligence to everything in between, Twilio is the go-to platform for global communications that every developer should have experience building with. Flex your creativity and AI skills in whatever language you want, and add another impressive project to your portfolio!
## Our Prompt
For this challenge, your mandate is to **Build an AI-driven Experience that Leverages Twilio**.
You are free to use _any_ Twilio product and _any_ third-party AI tool/API - the world is your oyster! For those of you who don’t want to start from scratch, we encourage you to build on top of an existing Twilio project so long as you add a new AI element to it.
And for those of you who would like some incentivized guidelines, we have three additional prize categories for you to consider…😉
### Prize Categories
- **Twilio Times Two**: Awarded to a top submission that utilizes two or more Twilio APIs.
- **Impactful Innovators**: Awarded to a top submission that drives positive impact (social, environmental, etc).
- **Entertaining Endeavors**: Awarded to a top submission that pushes the boundaries of creativity and gives us a good laugh.
## Prizes
Our prompt winner (1) will receive:
- $2,000 USD
- Exclusive DEV Badge
- A gift from the [DEV Shop](https://shop.forem.com)
Our prize category winners (3) will receive:
- $1,000 USD
- Exclusive DEV Badge
- A gift from the [DEV Shop](https://shop.forem.com)
**All Participants** with a valid submission will receive a completion badge on their DEV profile.
{% card %}
## How To Participate
In order to participate, you will need to publish a post using the submission template provided. All submissions must use at least one Twilio product and incorporate a third-party AI tool.
- You do not need a credit card to sign up for Twilio. In addition to a free trial that includes $15 for new accounts, the Twilio team is offering all participants a $20 promo code:`twilio-ai-devto-55xvw` to utilize their services.
- You may incorporate any third-party AI tool as part of your submission. Here are a couple options that offer robust free tiers:
- [Google Gemini](https://ai.google.dev/gemini-api)
- [Cloudflare Workers AI](https://developers.cloudflare.com/workers-ai/platform/pricing)
We can't wait to see what you build!
{% cta https://dev.to/new?prefill=---%0Atitle%3A%20%0Apublished%3A%20%0Atags%3A%20devchallenge%2C%20twiliochallenge%2C%20ai%2C%20twilio%0A---%0A%0A*This%20is%20a%20submission%20for%20the%20%5BTwilio%20Challenge%20%5D(https%3A%2F%2Fdev.to%2Fchallenges%2Ftwilio)*%0A%0A%23%23%20What%20I%20Built%0A%3C!--%20Share%20an%20overview%20about%20your%20project.%20--%3E%0A%0A%23%23%20Demo%0A%3C!--%20Share%20a%20link%20to%20your%20app%20and%20include%20some%20screenshots%20here.%20--%3E%0A%0A%23%23%20Twilio%20and%20AI%0A%3C!--%20Tell%20us%20how%20you%20leveraged%20Twilio%E2%80%99s%20capabilities%20with%20AI%20--%3E%0A%0A%23%23%20Additional%20Prize%20Categories%0A%0A%3C!--%20Does%20your%20submission%20qualify%20for%20any%20additional%20prize%20categories%20(Twilio%20Times%20Two%2C%20Impactful%20Innovators%2C%20Entertaining%20Endeavors)%3F%20Please%20list%20all%20that%20apply.%20%20--%3E%0A%0A%3C!--%20Team%20Submissions%3A%20Please%20pick%20one%20member%20to%20publish%20the%20submission%20and%20credit%20teammates%20by%20listing%20their%20DEV%20usernames%20directly%20in%20the%20body%20of%20the%20post.%20--%3E%0A%0A%3C!--%20Don%27t%20forget%20to%20add%20a%20cover%20image%20(if%20you%20want).%20--%3E%0A%0A%3C!--%20Thanks%20for%20participating!%20%E2%86%92 %}
Twilio Challenge Submission Template
{% endcta %}
{% endcard %}
Please review our [judging criteria, rules, guidelines, and FAQ page](https://dev.to/challenges/twilio) before submitting so you understand our participation guidelines and [official contests rules](https://dev.to/page/twilio-challenge-v24-06-12-contest-rules) such as eligibility requirements.
### Extra Fun - Twilio CodeExchange
We encourage everyone to submit their projects to [Twilio's CodeExchange](https://www.twilio.com/code-exchange) for a chance to get featured!
{% cta https://airtable.com/appqkdf4m2vJ79wYv/pagtYQ96ZVKZENMXZ/form %}
Twilio CodeExchange Submission Form
{% endcta %}
Can't hurt to try :)
## Need Help?
Get to know Twilio by utilizing their docs, tutorials, and blog posts.
- [Quickstart Guide](https://www.twilio.com/docs/usage/quickstart)
- [Developer Docs](https://www.twilio.com/docs)
{% embed https://dev.to/twilio %}
## Important Dates
- June 12: Twilio Challenge begins!
- <mark>June 23: Submissions due at 11:59 PM PDT</mark>
- June 25: Winners Announced
We can’t wait to see what you build! Questions about the challenge? Ask them below.
Good luck and happy coding!
| thepracticaldev |
1,885,927 | Asserting Integrity in Ethereum Data Extraction with Go through tests | Introduction In this tutorial, we'll walk through how to use tests to ensure the integrity of... | 0 | 2024-06-12T16:30:28 | https://dev.to/burgossrodrigo/asserting-integrity-in-ethereum-data-extraction-with-go-through-tests-i8m | go, testing, ethereum | **Introduction**
In this tutorial, we'll walk through how to use tests to ensure the integrity of Ethereum data extraction in a Go application. We'll be using the Go-Ethereum client to retrieve block and transaction data and using the testify package for our tests.
**Prerequisites**
1. Basic understanding of Go programming language.
2. Go installed on your system.
3. geth (Go-Ethereum) client installed.
4. testify package installed (go get github.com/stretchr/testify).
**Project Setup**
1. Create a Go Project:
```
mkdir ethereum-data-extraction
cd ethereum-data-extraction
go mod init ethereum-data-extraction
```
2. Install Dependencies:
```
go get github.com/ethereum/go-ethereum
go get github.com/stretchr/testify
```
**Code for Data Extraction**
Block Data Extraction
Let's start with the function to extract block data.
```
package blockchain
import (
"context"
"log"
"math/big"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rpc"
)
type BlockData struct {
Number *big.Int
Hash string
ParentHash string
Nonce uint64
Sha3Uncles string
Miner string
Difficulty *big.Int
ExtraData string
Size uint64
GasLimit uint64
GasUsed uint64
Timestamp uint64
Transactions []string
}
func getClient() (*ethclient.Client, error) {
client, err := ethclient.Dial("https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID")
if err != nil {
return nil, err
}
return client, nil
}
func GetBlockData(blockNumber *big.Int) (*BlockData, error) {
client, err := getClient()
if err != nil {
log.Fatal("Failed to get client:", err)
}
block, err := client.BlockByNumber(context.Background(), blockNumber)
if err != nil {
log.Fatalf("Failed to retrieve the block: %v", err)
return nil, err
}
transactionHashes := make([]string, len(block.Body().Transactions))
for i, tx := range block.Body().Transactions {
transactionHashes[i] = tx.Hash().Hex()
}
blockData := &BlockData{
Number: block.Number(),
Hash: block.Hash().Hex(),
ParentHash: block.ParentHash().Hex(),
Nonce: block.Nonce(),
Sha3Uncles: block.UncleHash().Hex(),
Miner: block.Coinbase().Hex(),
Difficulty: block.Difficulty(),
ExtraData: string(block.Extra()),
Size: block.Size(),
GasLimit: block.GasLimit(),
GasUsed: block.GasUsed(),
Timestamp: block.Time(),
Transactions: transactionHashes,
}
return blockData, nil
}
```
**Transaction Data Extraction**
Next, we define the function to extract transaction data.
```
package blockchain
import (
"context"
"log"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
)
type TransactionData struct {
Hash string
Nonce uint64
From string
To string
Value *big.Int
Gas uint64
GasPrice *big.Int
Data string
}
func GetTxData(txHash string) (*TransactionData, error) {
client, err := getClient()
if err != nil {
log.Fatal("Failed to get client:", err)
return nil, err
}
tx, _, err := client.TransactionByHash(context.Background(), common.HexToHash(txHash))
if err != nil {
log.Fatal("Failed to retrieve transaction:", err)
return nil, err
}
sender, err := getTxSender(tx)
if err != nil {
log.Fatalf("Failed to get sender: %v", err)
return nil, err
}
decodedData := decodeTxData(tx.Data())
return &TransactionData{
Hash: tx.Hash().Hex(),
Nonce: tx.Nonce(),
From: sender,
To: tx.To().Hex(),
Value: tx.Value(),
Gas: tx.Gas(),
GasPrice: tx.GasPrice(),
Data: decodedData,
}, nil
}
func getChainId() (*big.Int, error) {
client, err := getClient()
if err != nil {
log.Fatal("Failed to get client:", err)
return big.NewInt(0), err
}
chainId, err := client.NetworkID(context.Background())
if err != nil {
log.Fatal("Failed to get chainId:", err)
return big.NewInt(0), err
}
return chainId, nil
}
func getTxSender(tx *types.Transaction) (string, error) {
chainId, err := getChainId()
if err != nil {
log.Fatal("Failed to get chainId:", err)
return "", err
}
sender, err := types.Sender(types.NewLondonSigner(chainId), tx)
if err != nil {
log.Fatal("Not able to retrieve sender:", err)
return "", err
}
return sender.Hex(), nil
}
func decodeTxData(data []byte) string {
dataHex := common.Bytes2Hex(data)
return dataHex
}
```
**Writing Tests**
Now, let's write tests to assert the integrity of the data extraction functions.
```
package blockchain
import (
"fmt"
"math/big"
"testing"
"github.com/stretchr/testify/assert"
)
func TestGetBlockData(t *testing.T) {
blockNumber := big.NewInt(20076728)
blockData, err := GetBlockData(blockNumber)
// Use fmt.Sprintf to format the log message
t.Log(fmt.Sprintf("Block Data: \n%+v\nError: \n%v", blockData, err))
assert.Nil(t, err)
assert.NotNil(t, blockData)
}
func TestGetTransactionData(t *testing.T) {
blockNumber := big.NewInt(20076728)
blockData, err := GetBlockData(blockNumber)
assert.Nil(t, err)
assert.NotNil(t, blockData)
if len(blockData.Transactions) > 0 {
tx := blockData.Transactions[0]
txData, err := GetTxData(tx)
// Use fmt.Sprintf to format the log message
t.Log(fmt.Sprintf("Transaction Data: \n%+v\nError: \n%v", txData, err))
assert.Nil(t, err)
assert.NotNil(t, txData)
} else {
t.Skip("No transactions found in the block")
}
}
```
Run the tests using the following command:
```
go test -v
```
**The output:**
```
--- PASS: TestGetBlockData (0.95s)
=== RUN TestGetTransactionData
Current working directory: /mnt/c/github/dfbeat-v2/pkg/blockchain
Current working directory: /mnt/c/github/dfbeat-v2/pkg/blockchain
Current working directory: /mnt/c/github/dfbeat-v2/pkg/blockchain
blockchain_test.go:33: Transaction Data:
&{Hash:0x47e80ad8fa5f3bc94160f7eb1a3357f87b2756190007ab815b1a1890ddb65949 Nonce:249 BlockHash: BlockNumber:0 TransactionIndex:0 From:0x71B8CF59230bb295ade15506efd258eb458056A1 To:0x80a64c6D7f12C47B7c66c5B4E20E72bc1FCd5d9e Value:+50000000000000000 Gas:297438 GasPrice:+81175867687 Data: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}
Error:
<nil>
--- PASS: TestGetTransactionData (0.56s)
```
**Conclusion**
In this tutorial, we have demonstrated how to extract block and transaction data from the Ethereum blockchain using Go and the Go-Ethereum client. We also covered how to write and run tests to ensure the integrity of the data extraction process. By following these steps, you can reliably retrieve and verify blockchain data in your Go applications. | burgossrodrigo |
1,886,197 | Curso De Inteligência Artificial Gratuito Com Certificado Conquer | Descubra o potencial da Inteligência Artificial para aprimorar sua carreira com o curso online e... | 0 | 2024-06-23T13:50:34 | https://guiadeti.com.br/curso-inteligencia-artificial-gratuito-certificado/ | cursogratuito, automacao, cursosgratuitos, inteligenciaartifici | ---
title: Curso De Inteligência Artificial Gratuito Com Certificado Conquer
published: true
date: 2024-06-12 16:30:00 UTC
tags: CursoGratuito,automacao,cursosgratuitos,inteligenciaartifici
canonical_url: https://guiadeti.com.br/curso-inteligencia-artificial-gratuito-certificado/
---
Descubra o potencial da Inteligência Artificial para aprimorar sua carreira com o curso online e gratuito de Inteligência Artificial da Conquer, disponível por tempo limitado.
Se você se sente desorientado(a) com as inovações que a Inteligência Artificial está introduzindo no mercado de trabalho, deseja aumentar sua produtividade para gerenciar mais projetos, ou está em busca de técnicas para enriquecer seu processo criativo, este curso oferece o conhecimento necessário para você avançar.
Este curso é especialmente projetado para quem acredita no poder da IA para crescimento profissional, mas ainda não sabe como aplicá-la efetivamente.
Apos concluir o curso, você receberá um certificado comprobatório, e poderá concorrer a prêmios com o programa de indicação.
## Curso Inteligência Artificial
Conheça as possibilidades que a Inteligência Artificial oferece para o seu crescimento profissional com o curso online e gratuito da Conquer, disponível por tempo limitado.
_Imagem da página do curso_
Este curso é um bom ponto de partida para quem deseja entender e aplicar IA no ambiente profissional, mas ainda não sabe por onde começar.
### Características e Benefícios do Curso
Ao concluir o curso, você será recompensado com um certificado que adiciona 10 horas ao seu currículo.
Esse certificado possui um QR Code que assegura sua autenticidade, facilitando a verificação por parte de empregadores ou outras instituições educacionais.
### Público-Alvo
Este curso é perfeito se você:
- Acredita no potencial da IA para o desenvolvimento de sua carreira e busca aprender como utilizá-la efetivamente.
- Sente-se desafiado pelas novas demandas que a IA introduz no mercado de trabalho.
- Deseja aumentar sua produtividade e gerenciar mais projetos.
- Está em busca de técnicas para enriquecer seu processo criativo.
### Recursos e Metodologia
O curso oferece conteúdo atualizado sobre IA, ministrado por professores que utilizam essa tecnologia em sua rotina de trabalho.
Tendo aulas gravadas disponíveis na plataforma, você pode assistir quando e onde quiser, inclusive offline através do aplicativo, garantindo flexibilidade total no seu aprendizado.
O curso é estruturado para ser prático, permitindo que você aplique o conhecimento adquirido imediatamente. Confira a ementa:
#### Módulo 1 – Estratégias para dominar a IA
Como não ser substituído(a) pela IA
- A inteligência por trás da IA;
- Faça as perguntas certas para ter ótimas respostas da IA;
- Case ZTX-Labs: como uma empresa foi criada do zero com o uso do ChatGPT;
- Facilite seu dia a dia com ChatGPT, Gemini e Copilot;
- Bônus: Desvendando o ChatGPT4 Omni;
- Bônus: Transforme o medo da IA em vontade de aprender
O modelo “mão na massa” é complementado por uma masterclass de encerramento ao vivo, onde você pode interagir diretamente com os instrutores e outros alunos.
#### Módulo 2 – Eleve sua produtividade com IA
- Construção de textos assertivos e de maneira mais ágil;
- Ferramentas para tornar suas reuniões mais produtivas;
- Automatização de tarefas repetitivas;
- Bônus: IA em ação: cases profissionais de sucesso;
- Bônus: Como aproveitar no trabalho as facilidades que a IA proporciona.
#### Módulo 3 – IA como aliada ao processo criativo
- Geração, priorização e seleção de ideias usando IA;
- Funcionalidades da IA para análise de dados e insights criativos;
- Criação de imagens e vídeos com apoio da IA;
- Como montar apresentações usando IA.
#### Módulo 4 – Veja sua carreira decolar com a IA
- Mapeamento de competências e padrões de trabalho;
- Como melhorar a autogestão usando a IA;
- Ferramentas para aumentar repertório e acelerar o aprendizado;
- Plano para aplicação de IA na sua rotina;
- Bônus: Como integrar as inteligências humana e artificial.
#### Módulo 5 – 3 estratégias para ser um (uma) profissional de destaque na era da IA
Masterclass ao vivo e online.
### Participação e Incentivos
Ao se inscrever, você receberá um link para compartilhar com outros profissionais interessados em IA. Quanto mais pessoas usarem seu link para se inscrever, maiores serão suas chances de ganhar prêmios exclusivos.
#### Certificado e Rede de Contatos
Após concluir o curso e participar da masterclass de encerramento, você receberá um certificado que pode compartilhar com sua rede, aumentando sua visibilidade e abrindo novas oportunidades profissionais.
### Disponibilidade do Curso
O curso estará disponível gratuitamente até o dia 25/06, após o qual será exclusivo para alunos do Conquer Plus.
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## Inteligência Artificial
A inteligência artificial (IA) tem se tornado uma ferramenta revolucionária em diversos setores, especialmente quando se trata de aumentar a produtividade.
Empresas e indivíduos estão utilizando a IA para automatizar tarefas rotineiras, otimizar processos e tomar decisões mais rápidas e informadas.
### Automação de Tarefas Repetitivas
Uma das principais vantagens da IA é sua capacidade de automatizar tarefas repetitivas e demoradas. Isso não só acelera os processos, mas também libera os funcionários para se concentrarem em atividades de maior valor que requerem pensamento crítico e criatividade.
Ferramentas de IA podem lidar com a entrada de dados, gestão de agendas e até mesmo responder a perguntas frequentes de clientes, o que aumenta significativamente a produtividade geral.
### Aprimoramento da Tomada de Decisão
A Inteligência Artificial também tem função na análise de grandes volumes de dados para fornecer insights que seriam difíceis de detectar manualmente.
Tendo a capacidade de processar e analisar dados em tempo real, a IA ajuda as empresas a tomar decisões estratégicas baseadas em informações precisas e atualizadas, reduzindo riscos e melhorando os resultados.
### Personalização e Aprendizado Adaptativo
A inteligência artificial é capaz de personalizar experiências tanto para clientes quanto para funcionários.
No ambiente de trabalho, sistemas de IA podem aprender as preferências dos empregados e adaptar interfaces e tarefas de acordo com esses dados, melhorando a satisfação e a eficiência.
Para os clientes, a IA pode oferecer um serviço mais personalizado, melhorando a satisfação e fidelidade à marca.
### Previsão e Manutenção Preventiva
Em setores como manufatura e TI, a Inteligência Artificial pode prever falhas em equipamentos ou sistemas antes que ocorram, permitindo manutenções preventivas que minimizam o tempo de inatividade.
Tal capacidade de prever e reagir proativamente economiza tempo e recursos significativos, além de evitar a perda de produtividade.
## Conquer
A Conquer é uma escola de negócios com metodologia prática e direta ao ensino de habilidades essenciais para o mercado de trabalho contemporâneo.
Focada em transformar a educação profissional, a Conquer oferece cursos que incluem uma variedade de áreas, desde liderança e gestão até marketing e inovação tecnológica.
### Metodologia e Cursos Oferecidos
A Conquer adota uma metodologia de ensino que prioriza a aplicação prática do conhecimento. Isso significa que os alunos aprendem através de estudos de caso, simulações e projetos que simulam situações do mundo real.
A escola oferece cursos que vão desde habilidades de comunicação e negociação até cursos mais específicos como inteligência artificial e análise de dados, todos desenhados para aprimorar habilidades e impulsionar as carreiras de seus alunos.
### Impacto e Reconhecimento
A escola rapidamente se estabeleceu como uma líder em educação executiva no Brasil, atraindo alunos que buscam aprimorar suas habilidades para ascender profissionalmente.
## Link de inscrição ⬇️
As [inscrições para o Curso Inteligência Artificial](https://escolaconquer.com.br/inteligencia-artificial/?) devem ser realizadas no site da Conquer.
## Explore as oportunidades e compartilhe este caminho de aprendizado!
Gostou do conteúdo sobre o curso gratuito de Inteligência Artificial? Então compartilhe com a galera!
O post [Curso De Inteligência Artificial Gratuito Com Certificado Conquer](https://guiadeti.com.br/curso-inteligencia-artificial-gratuito-certificado/) apareceu primeiro em [Guia de TI](https://guiadeti.com.br). | guiadeti |
1,885,926 | Boost Productivity with Intuitive HTML Editor Software for LMS | Introduction An intuitive user interface (UI) in HTML editor software is crucial for enhancing... | 0 | 2024-06-12T16:28:30 | https://froala.com/blog/editor/boost-productivity-with-intuitive-html-editor-software-for-lms/ | froala, javascript, html, webdev | **Introduction**
An intuitive user interface (UI) in [HTML editor software](https://froala.com/) is crucial for enhancing developer productivity.
A well-designed UI reduces the learning curve and allows developers to focus on writing code rather than figuring out how to use the tool.
In this article, we’ll explore the importance of an intuitive UI in HTML editors, with a specific focus on Learning Management Systems (LMS).
We’ll include code snippets to demonstrate how these features can be leveraged effectively.
## **Key Elements of an Intuitive User Interface**
1. **Clean Layout and Design**
A clean layout minimizes distractions and helps developers concentrate on coding. Elements such as toolbars, menus, and panels should be organized logically. An intuitive design ensures that the most frequently used features are easily accessible.
Example: Froala’s toolbar can be customized to show only the essential tools, providing a clutter-free environment. This customization helps in maintaining focus and improving efficiency.
```xml
<div id="editor"></div>
<script>
new FroalaEditor('#editor', {
toolbarButtons: ['bold', 'italic', 'underline', '|', 'insertLink', 'insertImage'],
toolbarInline: false
});
</script>
```
Additionally, having the option to switch between different themes (light and dark) can further enhance usability by reducing eye strain during prolonged coding sessions.
**2\. Syntax Highlighting**
Syntax highlighting improves code readability by color-coding different elements of the code. This makes it easier to identify errors and understand the structure of the code. Different colors and fonts can be used to distinguish between keywords, variables, strings, and comments.
Example: Froala supports syntax highlighting out-of-the-box for various programming languages, which is essential for developers working with multiple languages.
```xml
<div id="editor"></div>
<script>
new FroalaEditor('#editor', {
codeMirror: true,
codeMirrorOptions: {
mode: 'text/html',
lineNumbers: true
}
});
</script>
```
Providing customization options for syntax highlighting can allow developers to choose color schemes that suit their preferences, further enhancing the user experience.
**3\. Drag-and-Drop**
FunctionalityIntuitive drag-and-drop functionality allows users to easily add and rearrange elements within the editor. This is particularly useful in LMS where content structuring is key. Users can drag elements like text blocks, images, and multimedia components to create interactive and engaging content.
Example: Implementing drag-and-drop in Froala for reordering sections.
```xml
<div id="froala-editor">
<h3>Click here to edit the content</h3>
<p><img id="edit" class="fr-fil fr-dib" src="https://raw.githubusercontent.com/froala/wysiwyg-editor/master/editor.jpg" alt="Old Clock" width="300"/></p>
<p>The image can be dragged only between blocks and not inside them.</p>
</div>
<script>
new FroalaEditor('#editor', {
dragInline: true // Enable inline dragging
pluginsEnabled: ['image', 'link', 'draggable']
});
</script>
```
Providing visual cues and guidelines during the drag-and-drop process can help users place elements precisely where they want, ensuring a smooth and intuitive experience.
**4\. WYSIWYG (What You See Is What You Get) Editing**
WYSIWYG editors provide a real-time preview of the final output, making it easier for developers to visualize their work. This is especially beneficial in LMS where content formatting is important. Users can see exactly how their content will appear to end-users as they create it.
Example: Using Froala’s WYSIWYG capabilities.
```xml
<div id="editor"></div>
<script>
new FroalaEditor('#editor', {
toolbarInline: true, // Show toolbar inline with the content
charCounterCount: false // Disable the character counter
});
</script>
```
Enhanced WYSIWYG features can include real-time collaboration, where multiple users can edit the same document simultaneously, and changes are instantly reflected for all collaborators.
**5\. Customizable Shortcuts**
Customizable keyboard shortcuts enhance efficiency by allowing developers to perform frequent actions quickly. This feature can be a significant productivity booster, especially for developers who prefer using the keyboard over the mouse.
Example: Defining custom shortcuts in Froala.
```xml
<div id="editor"></div>
<script>
new FroalaEditor('#editor', {
// ... your other Froala configuration options ...
});
// Register custom shortcut (after editor initialization)
FroalaEditor.RegisterShortcut(49, 'paragraphFormat.apply', 'H1', 'H', false);
</script>
```
Providing a comprehensive list of default shortcuts and the ability to create custom shortcuts can cater to the diverse preferences of different developers, making the editor more versatile.
## **Focus on LMS: Enhancing Content Creation**
In the context of Learning Management Systems, an intuitive HTML editor UI can significantly enhance the content creation process for educators and administrators. By providing an easy-to-use, feature-rich editor, LMS platforms can ensure that users spend more time creating quality educational content rather than struggling with the editor interface.
**Media Embedding**
Easily embedding videos, images, and other media types enhances the interactivity of the content. Media-rich content can improve student engagement and comprehension.
```xml
<div id="editor"></div>
<script>
new FroalaEditor('#editor', {
toolbarButtons: ['insertVideo', 'insertImage', 'insertFile']
});
</script>
```
The ability to embed interactive elements such as quizzes, polls, and discussion forums can further enrich the learning experience.
**Real-Time Feedback and Grading**
Implementing features that allow for real-time feedback and automated grading of assignments can save educators significant time and effort. This can be achieved through integration with LMS grading systems.
```xml
<script>
new FroalaEditor('#editor', {
events: {
'contentChanged': function() {
// Custom logic for real-time feedback
}
}
});
</script>
```
## **Conclusion**
An intuitive user interface in [HTML editor software](https://froala.com/) is essential for improving developer productivity and creating high-quality content, especially in Learning Management Systems.
By focusing on features like a clean layout, syntax highlighting, drag-and-drop functionality, WYSIWYG editing, and customizable shortcuts, developers can work more efficiently and effectively.
Froala’s HTML editor exemplifies these principles, making it a valuable tool for developers and educators alike.
By integrating code snippets and practical examples, this article provides developers with a clear understanding of how to leverage an intuitive HTML editor to enhance their workflow.
The focus on practical applications within LMS ensures that the content is relevant and immediately useful to developers working in the education sector. You can also view our [LMS whitepaper](https://froala.com/lms-developers/) talking about this in depth. | ideradevtools |
1,885,925 | Saavn Music Player for Windows | Welcome to the Saavn Music Player for Windows, an open-source desktop application that allows you to... | 0 | 2024-06-12T16:25:46 | https://dev.to/priyanshuverma/saavn-music-player-for-windows-420k | flutter, music, programming, opensource | Welcome to the Saavn Music Player for Windows, an open-source desktop application that allows you to enjoy your favorite music seamlessly. This music player is powered by the Saavn API and built with Flutter, providing a robust and modern user experience.
## Features
- **Seamless Music Playback**: Enjoy high-quality music playback with an intuitive interface.
- **Search and Discover**: Use the Saavn API to search for your favorite songs, albums, and artists.
- **Playlist Management**: Create and manage your playlists easily.
- **Rich Metadata**: View detailed metadata for each track, including album art, artist information, and more.
- **Cross-Platform**: Built with Flutter, ensuring a consistent experience across different devices.
## Installation
To install the Saavn Music Player for Windows, follow these steps:
1. **Download the Latest Release**:
- Go to the [Releases](https://github.com/priyanshuverma-dev/saavn/releases) page and download the latest version for Windows.
2. **Clone the Repository (optional for development)**:
```sh
git clone https://github.com/priyanshuverma-dev/saavn.git
```
3. **Navigate to the Project Directory (optional for development)**:
```sh
cd saavn
```
4. **Install Dependencies (optional for development)**:
Make sure you have Flutter installed. Then, run:
```sh
flutter pub get
```
5. **Build the Application (optional for development)**:
```sh
flutter build windows
```
6. **Run the Application (optional for development)**:
```sh
flutter run -d windows
```
## Usage
Once installed, you can start using the music player to search for songs, create playlists, and enjoy seamless music playback. The user interface is designed to be intuitive, making it easy for you to navigate through your music library.
## Contributing
We welcome contributions to the Saavn Music Player project! To contribute, please read the [Contributing Guide](https://github.com/priyanshuverma-dev/saavn/CONTRIBUTING.md).
## License
This project is licensed under the MIT License. See the [LICENSE](https://github.com/priyanshuverma-dev/saavn/LICENSE) file for more details.
## Acknowledgements
- **Saavn API**: This project uses the [JioSaavn API](https://github.com/sumitkolhe/jiosaavn-api) for fetching music data.
- **Flutter**: Built with [Flutter](https://github.com/priyanshuverma-dev).
- **Open Source**: Check out the source code on [GitHub](https://github.com/priyanshuverma-dev/saavn).
## Contact
For any queries or support, feel free to reach out to the project maintainer [Priyanshu Verma](https://github.com/priyanshuverma-dev).
Enjoy your music! 🎶 | priyanshuverma |
1,885,924 | Thought 😇 | **You always see the world, the way you are, not the way world is. 🤗✨... | 0 | 2024-06-12T16:22:52 | https://dev.to/krupa_90ca3564d1/thought-1dj5 | motivation | **You always see the world, the way you are, not the way world is.
🤗✨... | krupa_90ca3564d1 |
1,885,922 | Automating Telegram Bot Deployment with GitHub Actions and Docker | Introduction In previous articles, we explored the benefits of Docker, as well as walked... | 0 | 2024-06-12T16:16:24 | https://tjtanjin.medium.com/automating-telegram-bot-deployment-with-github-actions-and-docker-482abcd2533e | docker, githubactions, telegrambot, telegram | ## Introduction
In previous articles, we explored the [benefits of Docker](https://dev.to/tjtanjin/from-screen-to-docker-a-look-at-two-hosting-options-42eh), as well as walked through examples of [how we may dockerize our project](https://dev.to/tjtanjin/how-to-dockerize-a-telegram-bot-a-step-by-step-guide-37ol) and [integrate CI/CD into our development workflows](https://dev.to/tjtanjin/level-up-your-projects-with-github-actions-cicd-2lnh). However, we haven't yet examined how to piece them together in practical applications.
In this article, we will embark on a journey to automate the deployment of a Telegram bot with **Docker** and **GitHub Actions**. By the end of this walkthrough, you will garner deeper insights into how Docker and GitHub Actions may be used in tandem to streamline the deployment of your projects. So without further ado, let's dive into the content!
## Prerequisites
Before we explore the automating of a Telegram bot deployment, do note that the guide assumes knowledge of the following:
- Familiarity with Linux command line
- [Dockerizing a Project](https://dev.to/tjtanjin/how-to-dockerize-a-telegram-bot-a-step-by-step-guide-37ol)
- [Basic Understanding of GitHub Actions](https://dev.to/tjtanjin/level-up-your-projects-with-github-actions-cicd-2lnh)
We will not be covering the above as they are not the focus of this guide - links to relevant guides for them have been provided! All that said, if you need help with any of the above, you are more than welcome to [reach out](https://discord.com/invite/X8VSdZvBQY) for assistance.
Note that the contents of this tutorial can be **generalized** and applied to projects other than Telegram bots. However, for the purpose of this tutorial, you are encouraged to follow it through with [this simple Telegram bot project](https://github.com/tjtanjin/tele-qr). **Even better** if you have read my [previous articles](https://dev.to/tjtanjin/how-to-build-a-telegram-bot-a-beginners-step-by-step-guide-1kd1), because then you would be comfortable working with Telegram bots by now!
## Project Setup
As mentioned, we will be using ([TeleQR](https://github.com/tjtanjin/tele-qr)) as an example so go ahead and clone the project to your local computer with the command:
```
git clone https://github.com/tjtanjin/tele-qr.git
```
The project already comes with GitHub Actions setup by default. For the purpose of this tutorial, let us **remove** that by deleting all the contents within the `.github/workflows` folder. Once that's done, we are ready to create our own workflows!
Specifically for TeleQR, we are keen to create **3 workflows**:
- Flake8 Lint (for checking of code styles)
- Docker Hub (for building and uploading of our docker image)
- Deployment (for deploying our Telegram bot)
We will create the workflow files in the order above and watch how all of them come together at the end of this! But first, what makes a typical GitHub Actions workflow?
## A Typical GitHub Actions Workflow
A GitHub Actions workflow is a YAML file that automates tasks in your development lifecycle, such as for **linting your code** or **deploying your project**. Typically, it's located in the `.github/workflows` directory of your repository and consist of the following parts:
- **Name:** Provides a convenient identifier for the workflow
- **Trigger Events:** Defines what events trigger the workflow, such as `push` or `pull_request`
- **Jobs and Steps:** Specifies jobs that are made up of steps that perform tasks like checking out code, setting up environments, installing dependencies and running tests.
- **Environment Variables:** Defines environment variables that can be used throughout the workflow
There are more properties not covered above but this is enough for understanding the walkthrough. If they look foreign to you, **don't fret!** We'll now curate a simple workflow file for linting our code that will provide you with more clarity.
## Create Flake8 Lint Workflow
To create the Lint workflow, let us first create a `flake8-lint.yml` file within the `.github/workflows` folder. For linting, we are using flake8 so let us **name** this workflow `Flake8 Lint`:
```
name: Flake8 Lint
```
We are also keen to run this workflow only when pushes are made to the master branch, so let us include that as a **trigger event**:
```
on:
push:
branches: [ "master" ]
```
Next, we will specify a single lint **job** to run using the latest Ubuntu image:
```
jobs:
lint:
name: Lint Codebase
runs-on: ubuntu-latest
steps:
# our steps here
```
As you can see from the comment in the snippet above, we actually need to define the **steps** in the job. For this lint job, we will carry out the following **4 steps**:
### Step 1: Checkout Code
Before we can lint our codebase, we need to understand that workflow runs are done on a **runner**. In this case, you can think of it as a separate server or virtual machine that will run the linting job. The Checkout Code step uses [actions/checkout](https://github.com/actions/checkout), which is crucial for bringing your repository code into the runner environment:
```
- name: Checkout code
uses: actions/checkout@v4
```
Without this step, your codebase will not even be available for linting!
### Step 2: Setup Python
For this Python project, we are using Python 3.10 so let us setup and install this Python version:
```
- name: Set up Python
run: |
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.10 -y
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.10 1
sudo update-alternatives --set python3 /usr/bin/python3.10
```
### Step 3: Install Dependencies
Next, in order to run [flake8](https://flake8.pycqa.org/en/latest/), we need it to be installed:
```
- name: Install dependencies
run: |
python -m pip install --upgrade pip
pip install flake8
```
### Step 4: Run flake8
Finally, once the setup is complete, we can do the actual linting by running flake8:
```
- name: Run Flake8
run: |
python -m flake8
```
Putting all our configurations together, our final file for linting will look similar to the following:
```
name: Flake8 Lint
run-name: Flake8 Lint
on:
push:
branches: [ "master" ]
jobs:
lint:
name: Lint Codebase
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v4
- name: Set up Python
run: |
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.10 -y
sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.10 1
sudo update-alternatives --set python3 /usr/bin/python3.10
- name: Install dependencies
run: |
python -m pip install --upgrade pip
pip install flake8
- name: Run Flake8
run: |
python -m flake8
```
Now that we've gone through the various parts of the workflow, it's getting pretty straightforward - isn't it? Let us move on and look at how we can create the Docker Hub workflow.
## Create Docker Hub Workflow
Similar to the Lint workflow, we will add a `docker-hub.yml` file within the `.github/workflows folder`. Since we will be publishing a docker image onto [Docker Hub](https://hub.docker.com/) in this workflow, let us **name** it `Docker Hub`:
```
name: Docker Hub
```
However, **unlike the Lint workflow**, we only want the Docker Hub workflow to run **after the Lint workflow is completed**. Thus, we add the following **trigger event**:
```
on:
workflow_run:
workflows: ["Flake8 Lint"]
types:
- completed
```
With that said, just waiting for the Lint workflow to be completed before running the Docker Hub workflow is **not enough**, we also want to ensure that the **Lint workflow completed successfully**. Thus, we will add a check to our job:
```
jobs:
deploy:
name: Deploy
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
# our steps here
```
Notice an extra line that checks if the `workflow_run` concluded successfully. We can then move on to adding the **job and steps** for our Docker Hub workflow:
### Step 1: Checkout Code
As with before, we use [actions/checkout](https://github.com/actions/checkout) to checkout our code:
```
- name: Checkout code
uses: actions/checkout@v4
```
### Step 2: Login to Docker Hub
In order to publish our Docker Image to Docker Hub, we need to first login to our account. We can make use of [docker/login-action](https://github.com/docker/login-action) for this:
```
- name: Log in to Docker Hub
uses: docker/login-action@
with:
username: ${{ secrets.DOCKER_USERNAME }}
password: ${{ secrets.DOCKER_PASSWORD }}
```
At this point, some of you may be wondering - how are we going to provide the username and password required for logging in? It's certainly not wise to include our credentials directly in the workflow file, but we can use **GitHub secrets**!
Head over to your **repository settings** and look to the tab on the left. Under the **Security** section, click on **Secrets and variables** and in the dropdown, click on **Actions**. This is what you should see:
Since we'll need a **username and password** to login to docker hub, we'll create **2 secrets** with the following names:
- DOCKER_USERNAME
- DOCKER_PASSWORD
The values for these secrets will have to come from your [Docker Hub](https://hub.docker.com/) account. Once these are created, they will be available for our Docker Hub workflow to use!
### Step 3: Extract Metadata for Docker
We will next then extract the metadata that will be included with our docker image when we push it to Docker Hub using [docker/metadata-action](https://github.com/docker/metadata-action):
```
- name: Extract metadata (tags, labels) for Docker
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
```
If you're observant, you may notice that we have 2 environment variables (**REGISTRY** and **IMAGE_NAME**) declared here. Go ahead and declare an `env` property at the top of the file for these variables in the following manner:
```
env:
REGISTRY: docker.io
IMAGE_NAME: ${{ github.repository }}
```
We are basically specifying that the registry we'll be uploading our docker image to is `docker.io` and that the repository name will be used as the image name.
### Step 4: Build and Push Docker Image
Finally, we build and push our image to Docker Hub:
```
- name: Build and push Docker image
uses: docker/build-push-action@v5
with:
context: .
file: ./Dockerfile
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
```
Notice that the tags and labels are obtained from the previous step! Your final Docker Hub workflow file should look similar to the following:
```
name: Docker Hub
run-name: Docker Hub
on:
workflow_run:
workflows: ["Flake8 Lint"]
types:
- completed
env:
REGISTRY: docker.io
IMAGE_NAME: ${{ github.repository }}
jobs:
push_to_registry:
name: Push Docker image to Docker Hub
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
- name: Check out the repo
uses: actions/checkout@v3
- name: Log in to Docker Hub
uses: docker/login-action@v3
with:
username: ${{ secrets.DOCKER_USERNAME }}
password: ${{ secrets.DOCKER_PASSWORD }}
- name: Extract metadata (tags, labels) for Docker
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
- name: Build and push Docker image
uses: docker/build-push-action@v5
with:
context: .
file: ./Dockerfile
push: true
tags: ${{ steps.meta.outputs.tags }}
labels: ${{ steps.meta.outputs.labels }}
```
## Create Deployment WorkFlow
Upon successfully pushing our docker image to Docker Hub, the final workflow we want to run would be deployment. Create a `deployment.yml` file within the `.github/workflows` folder. We will simply **name** this `Deployment`:
```
name: Deployment
```
For deployment, we only want it to run after our image has been pushed to Docker Hub. Thus, we add the following **trigger event**:
```
on:
workflow_run:
workflows: ["Docker Hub"]
types:
- completed
```
Similarly, we only want to deploy if the Docker Hub workflow succeeded so we add a quick check:
```
jobs:
deploy:
name: Deploy
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
# our steps here
```
For this workflow, the **job** only has a single **step** which calls the [deployment script](https://github.com/tjtanjin/tele-qr/blob/master/scripts/deploy.sh) - the script resides on a **Virtual Private Server** (VPS) that I have:
```
- name: executing deployment script
uses: appleboy/ssh-action@v0.1.10
with:
host: ${{ secrets.DEPLOYMENT_HOST }}
username: ${{ secrets.DEPLOYMENT_USERNAME }}
password: ${{ secrets.DEPLOYMENT_PASSWORD }}
script: cd tele-qr/ && ./scripts/deploy.sh tele-qr
```
Note that we have provided **3 more secrets** to authenticate to my VPS using [appleboy/ssh-action](https://github.com/appleboy/ssh-action). For the deployment workflow, it will likely vary depending on how you wish to deploy/host the project. For my project, I [hosted it on a simple VPS server](https://dev.to/tjtanjin/how-to-host-a-telegram-bot-on-ubuntu-a-step-by-step-guide-4jk3) and this is the final workflow file:
```
name: Deployment
run-name: Deployment
on:
workflow_run:
workflows: ["Docker Hub"]
types:
- completed
jobs:
deploy:
name: Deploy
runs-on: ubuntu-latest
if: ${{ github.event.workflow_run.conclusion == 'success' }}
steps:
- name: executing deployment script
uses: appleboy/ssh-action@v0.1.10
with:
host: ${{ secrets.DEPLOYMENT_HOST }}
username: ${{ secrets.DEPLOYMENT_USERNAME }}
password: ${{ secrets.DEPLOYMENT_PASSWORD }}
script: cd tele-qr/ && ./scripts/deploy.sh tele-qr
```
## Testing & Verification
Having put everything together, we can easily do a quick test to verify that our workflows are setup as intended. Trigger the workflows to run by **making any code changes** to the project (e.g. adding a comment) and you should see the Lint workflow beginning to run under the `Actions` tab of your repository. If everything runs successfully, you'll be greeted with results similar to the following:
## Conclusion
Anddddd it's a wrap! In this tutorial, we've gone through detailed steps of setting up our GitHub Actions workflows to automate the deployment of a Telegram bot. If you are keen, you can go further and explore the adding of a **test workflow** as well as using **matrix strategy** to run against multiple versions. For reference, the workflows for a chatbot project of mine can be found [here](https://github.com/tjtanjin/react-chatbotify).
Finally, I hope that you've found this sharing useful, and that you'll see value in applying what was covered here into your projects. As usual, feel free to share your thoughts, ideas, or feedback in the comments or [reach out](https://discord.com/invite/X8VSdZvBQY) to me directly. Thank you for your time and see you in the next article! | tjtanjin |
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Abordaremos los principios básicos de la accesibilidad web de manera sencilla y práctica, con ejemplos fáciles de entender. 👊🏻 Además, de recursos valiosos para profundizar en el tema y convertir su sitio web en un verdadero ejemplo de inclusión digital.
¿Preparados para crear un mundo web más accesible y amigable para todos? ¡Comencemos esta aventura juntos!
Imagina que estás viendo un episodio de "Friends". Es fácil de entender y disfrutar, ¿verdad? Eso es porque "Friends" es accesible para ti. 💻 Pero, ¿qué pasaría si no pudieras oír el diálogo, o si no pudieras ver las expresiones faciales de los personajes? La accesibilidad web se trata de hacer que las páginas web sean tan fáciles de usar como un episodio de "Friends", para todas las personas, independientemente de sus habilidades.
Friends: Un Apartamento Inclusivo 🏙️
Imagina que Central Perk, el café favorito de nuestros amigos, no fuera accesible para todos. ¿Qué pasaría si Ross, tuviera problemas de movilidad, no pudiera subir las escaleras? ¿Y si Chandler, una visión borrosa, no pudiera leer el menú? ¿O si Phoebe, con sensibilidad auditiva, se sintiera abrumada por el ruido?
Un café para todos 🌃
Al igual que Central Perk debería ser un lugar acogedor para todos los amigos, los sitios web también deben ser accesibles para todas las personas, independientemente de sus discapacidades. La accesibilidad web significa que todos, sin importar sus limitaciones, pueden percibir, comprender, navegar e interactuar con un sitio web.
Principios básicos de accesibilidad 🐒
Para convertir un sitio web en un "apartamento inclusivo" como Central Perk, hay que seguir algunos principios básicos:
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+ Estructura clara: El sitio web debe estar organizado de manera lógica, con títulos y encabezados que describen claramente el contenido.
+ Navegación fácil: La navegación debe ser sencilla e intuitiva, utilizando menús claros y enlaces bien ubicados.
+ Compatibilidad con diferentes dispositivos: El sitio web debe funcionar correctamente en diferentes dispositivos, como computadoras, teléfonos inteligentes y tabletas.
+ Herramientas de apoyo: El sitio web debe ser compatible con herramientas de asistencia, como lectores de pantalla y software de reconocimiento de voz.
Ejemplos sencillos para entender mejor 👨💼
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Un sitio web accesible no solo beneficia a las personas con discapacidades, sino que también a:
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+ Personas que usan dispositivos móviles: Las pantallas pequeñas y los controles táctiles pueden dificultar la navegación en algunos sitios web.
+ Personas en entornos con poca luz o ruido: El texto con alto contraste y las opciones de audio pueden ser útiles en estas situaciones.
El Marco de la Puerta Púrpura: Navegación Clara (WCAG) 🚪
Piensa en el icónico marco de la puerta púrpura del apartamento. Es único y fácil de reconocer, justo como deberían ser los elementos de navegación en tu sitio. Deben ser claros y consistentes para que todos puedan encontrar su camino, incluso si usan lectores de pantalla o solo teclados para navegar.
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Joey una vez compró una canoa como mueble para el apartamento. No es lo más convencional, pero nos enseña a ser creativos. En términos de accesibilidad, esto significa ofrecer alternativas: descripciones de texto para imágenes, subtítulos para videos y transcripciones para audio, para que aquellos con discapacidades visuales o auditivas también puedan disfrutar del contenido.
El Pato y el Pollito: Flexibilidad de Interacción 🦆
Recuerda cuando Joey y Chandler tenían un pato y un pollito como mascotas. Eran impredecibles y requerían diferentes tipos de atención. 🐥Del mismo modo, tu sitio debe ser flexible y permitir diferentes métodos de interacción, como soporte para pantallas táctiles, mouse, teclado y comandos de voz, adaptándose a las necesidades de cada usuario.
La Silla: Compatibilidad con Tecnología de Asistencia 💺
Chandler una vez rompió la silla favorita de Joey, pero la tecnología (un mando a distancia) vino al rescate. De manera similar, tu sitio debe ser compatible con tecnologías de asistencia, como lectores de pantalla y software de reconocimiento de voz, para que todos puedan 'sentarse' cómodamente y disfrutar de tu contenido.
El Armario de Monica: Organización y Estructura 🛏️
Monica es conocida por su obsesión con la organización. Tu sitio web debe ser igual de ordenado, con una estructura lógica y etiquetas claras que ayuden a los usuarios a entender y predecir cómo se organiza la información, especialmente importante para aquellos con discapacidades cognitivas.
"Smelly Cat" de Phoebe: Contenido Comprensible 🐱
La canción de Phoebe, "Smelly Cat", es simple y pegajosa. Tu contenido debe ser igual de accesible: claro, directo y fácil de entender. Usa un lenguaje sencillo, explica las abreviaturas y proporciona instrucciones claras para que todos puedan seguir la melodía.
El Sofá Pivotante de Ross: Flexibilidad Visual 🛋️
¿Recuerdas cuando Ross intentaba mover su nuevo sofá por las escaleras y no paraba de gritar "¡Pivot!"? Bueno, tu sitio debe ser capaz de 'pivotar' también. Debe ser visualmente flexible, permitiendo a los usuarios ajustar tamaños de texto, colores y contrastes para satisfacer sus necesidades visuales.
Subtítulos (CC) - Chandler Bing 👦
Chandler es conocido por su sarcasmo y sus chistes rápidos. Pero, ¿qué pasaría si no pudieras oírlo? Aquí es donde entran los subtítulos. En la accesibilidad web, proporcionar subtítulos para contenido de audio y video es equivalente a permitir que todos "escuchen" a Chandler, incluso si no pueden oír.
Descripciones de imágenes - Joey Tribbiani 🧑
Joey es un personaje visual. Sus expresiones faciales y su lenguaje corporal a menudo comunican más que sus palabras. En la accesibilidad web, las descripciones de las imágenes (también conocidas como texto alternativo) permiten a las personas que no pueden ver las imágenes "ver" a Joey en acción.
Navegación por teclado - Ross Geller 👦🏻
Ross es un personaje que siempre tiene un plan y sabe exactamente a dónde va. En la accesibilidad web, la navegación por teclado permite a las personas que no pueden usar un ratón moverse por una página web con la misma facilidad que Ross se mueve por un museo.
Contraste de colores - Monica Geller 👩🏻🍳
Monica es conocida por su obsesión con la limpieza y la organización. Ella siempre quiere que todo sea claro y fácil de ver. En la accesibilidad web, el contraste de colores ayuda a asegurar que todo en una página web sea fácil de ver, al igual que el apartamento de Monica.
Contenido bien estructurado - Rachel Green 👩
Rachel comenzó como una camarera, pero finalmente se convirtió en una exitosa ejecutiva de moda. Ella sabe que una buena estructura es clave para un diseño exitoso. En la accesibilidad web, un contenido bien estructurado ayuda a las personas a entender y navegar por una página web, al igual que un buen diseño de moda ayuda a las personas a entender y apreciar una prenda de vestir.
Compatibilidad con tecnologías de asistencia - Phoebe Buffay 🧏🏼
Phoebe es única y no sigue las reglas convencionales. Sin embargo, siempre encuentra una manera de encajar y ser entendida. En la accesibilidad web, la compatibilidad con tecnologías de asistencia, como los lectores de pantalla, asegura que todos, incluso aquellos que son tan únicos como Phoebe, puedan usar y entender una página web.
Janice Litman-Goralnik - Retrocompatibilidad 💁🏻
Janice, la exnovia de Chandler, tiene la peculiaridad de aparecer inesperadamente en varias temporadas de la serie. Esto es similar a la retrocompatibilidad en la accesibilidad web. Al igual que los sitios web deben ser compatibles con tecnologías más antiguas para que los usuarios con sistemas operativos o navegadores más antiguos puedan acceder a ellos, Janice siempre encuentra una manera de ser compatible con la vida de Chandler, sin importar cuánto tiempo pase.
Gunther - Idiomas y localización 👨🏼🦱
Gunther, el gerente del Central Perk, es un personaje que habla varios idiomas en la serie. Esto puede representar la importancia de los idiomas y la localización en la accesibilidad web. Al igual que Gunther puede comunicarse con personas de diferentes orígenes, un sitio web accesible debe ser capaz de presentar su contenido en diferentes idiomas y adaptarse a las preferencias locales de los usuarios.
Mike Hannigan - Flexibilidad y adaptabilidad 🧒
Mike, el esposo de Phoebe, es un personaje que se adapta a las peculiaridades de Phoebe y muestra una gran flexibilidad. Esto puede representar la flexibilidad y adaptabilidad en la accesibilidad web. Al igual que Mike se adapta a Phoebe, un sitio web accesible debe ser flexible y adaptarse a las necesidades y preferencias de cada usuario.
Un mundo web más inclusivo 🌎
Al igual que nuestros amigos de Friends valoran la inclusión y la amistad, todos debemos trabajar juntos para crear un mundo web más accesible e inclusivo. Haciendo que nuestros sitios web sean accesibles para todos, podemos asegurarnos de que nadie se quede atrás en la era digital.
Conclusión ☕
Al igual que "Friends" es una serie que todos pueden disfrutar, la accesibilidad web se trata de hacer que las páginas web sean disfrutables para todos. Al seguir estos principios de accesibilidad, puedes hacer que tu página web sea tan inclusiva, comprensible y divertida como un episodio de "Friends".
Como puedes ver, hacer tu sitio web accesible es como preparar una reunión en el apartamento de "Friends": quieres que todos tus amigos, sin importar sus necesidades, puedan pasar un buen rato. ¡Espero que este post te haya inspirado y te haya dado una idea clara de cómo la accesibilidad web puede ser tan acogedora como un capítulo de "Friends" 😊
Recursos para aprender más sobre accesibilidad web:
- W3C Web Accessibility Initiative (WAI): https://www.w3.org/WAI/standards-guidelines/
- Fundamento de accesibilidad web: https://www.w3.org/WAI/standards-guidelines/es
- Pautas de accesibilidad para el contenido web (WCAG): https://www.w3.org/WAI/standards-guidelines/wcag/es
- Herramientas para evaluar la accesibilidad web: https://wave.webaim.org/
- DreamHost: 12 Ejemplos de Accesibilidad Web Para Inspirarte
¡Hagamos juntos de la web un lugar para todos!
🚀 ¿Te ha gustado? Comparte tu opinión.
Artículo completo, visita: https://lnkd.in/ewtCN2Mn
https://lnkd.in/eAjM_Smy 👩💻 https://lnkd.in/eKvu-BHe
https://dev.to/orlidev ¡No te lo pierdas!
Referencias:
Imágenes creadas con: Copilot (microsoft.com)
##PorUnMillonDeAmigos #LinkedIn #Hiring #DesarrolloDeSoftware #Programacion #Networking #Tecnologia #Empleo #AccesibilidadWeb #Friends
 | orlidev |
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1,885,917 | Effortless Compliance: Simplifying Retail Audits with Software Solutions | In today's fast-paced retail environment, maintaining compliance with regulations, standards, and... | 0 | 2024-06-12T16:01:52 | https://dev.to/developer_tips/effortless-compliance-simplifying-retail-audits-with-software-solutions-38a8 | In today's fast-paced retail environment, maintaining compliance with regulations, standards, and internal policies is paramount. However, traditional methods of conducting retail audits often prove cumbersome, time-consuming, and prone to errors. This is where the adoption of retail audit software comes into play, revolutionizing the way audits are performed and simplifying the compliance process for retailers.
### What is Retail Audits?
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### Challenges in Traditional Retail Audits
Traditional methods of conducting retail audits, such as manual checklist inspections or Excel-based tracking systems, are fraught with challenges. These include human error, lack of real-time visibility, inconsistency in data collection, and difficulties in analysis and reporting.
### The Emergence of Retail Audit Software
The advent of retail audit software has transformed the auditing process, offering numerous advantages over traditional methods.
### Benefits of Automation
Retail audit software automates many aspects of the auditing process, from data collection to report generation. This automation reduces the time and resources required for audits while minimizing the risk of errors.
### Streamlining Processes
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Retail audit software offers a range of features designed to enhance the audit process and drive compliance.
### Data Collection and Analysis
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### Customizable Checklists
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### Integration Capabilities
Many retail audit software solutions offer integration capabilities with other systems, such as POS (Point of Sale) systems, ERP (Enterprise Resource Planning) systems, and CRM (Customer Relationship Management) systems. This allows for seamless data exchange and ensures that audit findings are aligned with broader business objectives.
### How Retail Audit Software Simplifies Compliance
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### Ensuring Consistency
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### Improving Accuracy
Automation reduces the likelihood of human error, ensuring that audit data is accurate and reliable. This allows retailers to make informed decisions based on trustworthy information.
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The efficiency gains provided by retail audit software enable retailers to conduct audits more frequently and thoroughly. This proactive approach to compliance reduces the risk of costly penalties and reputational damage.
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### Future Trends in Retail Audit Software
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### Conclusion
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| developer_tips | |
1,885,916 | Effortless Compliance: Simplifying Retail Audits with Software Solutions | In today's fast-paced retail environment, maintaining compliance with regulations, standards, and... | 0 | 2024-06-12T16:01:52 | https://dev.to/developer_tips/effortless-compliance-simplifying-retail-audits-with-software-solutions-3gfp | In today's fast-paced retail environment, maintaining compliance with regulations, standards, and internal policies is paramount. However, traditional methods of conducting retail audits often prove cumbersome, time-consuming, and prone to errors. This is where the adoption of retail audit software comes into play, revolutionizing the way audits are performed and simplifying the compliance process for retailers.
### What is Retail Audits?
Retail audits involve the systematic inspection of various aspects of a retail operation, including store cleanliness, product availability, pricing accuracy, and adherence to promotional guidelines. These audits ensure that stores comply with company standards, industry regulations, and customer expectations.
### Challenges in Traditional Retail Audits
Traditional methods of conducting retail audits, such as manual checklist inspections or Excel-based tracking systems, are fraught with challenges. These include human error, lack of real-time visibility, inconsistency in data collection, and difficulties in analysis and reporting.
### The Emergence of Retail Audit Software
The advent of retail audit software has transformed the auditing process, offering numerous advantages over traditional methods.
### Benefits of Automation
Retail audit software automates many aspects of the auditing process, from data collection to report generation. This automation reduces the time and resources required for audits while minimizing the risk of errors.
### Streamlining Processes
By centralizing audit data and streamlining workflows, retail audit software enables retailers to conduct audits more efficiently and effectively. This results in improved compliance, operational performance, and overall customer satisfaction.
### Key Features of Retail Audit Software
Retail audit software offers a range of features designed to enhance the audit process and drive compliance.
### Data Collection and Analysis
Advanced data collection capabilities allow auditors to gather information quickly and accurately using mobile devices or tablets. This data is then analyzed in real-time, providing insights into store performance and compliance levels.
### Customizable Checklists
Retail audit software allows retailers to create customizable checklists tailored to their specific requirements. This ensures that audits are conducted consistently and comprehensively across all locations.
### Real-time Reporting
Real-time reporting capabilities enable retailers to access audit results instantly, allowing them to identify issues and take corrective action promptly. This ensures that compliance issues are addressed in a timely manner, minimizing the risk of non-compliance penalties or customer dissatisfaction.
### Integration Capabilities
Many retail audit software solutions offer integration capabilities with other systems, such as POS (Point of Sale) systems, ERP (Enterprise Resource Planning) systems, and CRM (Customer Relationship Management) systems. This allows for seamless data exchange and ensures that audit findings are aligned with broader business objectives.
### How Retail Audit Software Simplifies Compliance
Retail audit software simplifies compliance in several ways, making it easier for retailers to meet regulatory requirements and internal standards.
### Ensuring Consistency
By standardizing audit processes and checklists, retail audit software ensures consistency across all locations. This reduces the risk of discrepancies and ensures that compliance standards are uniformly applied.
### Improving Accuracy
Automation reduces the likelihood of human error, ensuring that audit data is accurate and reliable. This allows retailers to make informed decisions based on trustworthy information.
### Enhancing Efficiency
The efficiency gains provided by retail audit software enable retailers to conduct audits more frequently and thoroughly. This proactive approach to compliance reduces the risk of costly penalties and reputational damage.
### Choosing the Right Retail Audit Software
When selecting [retail sales audit software](https://mcamerchandising.com/en/retail-competitive-price-audits/), retailers should consider factors such as ease of use, scalability, customization options, integration capabilities, and cost.
### Implementation and Training
Successful implementation of retail audit software requires adequate training for staff members and effective change management strategies to overcome resistance to change.
### Overcoming Resistance to Change
Resistance to change is common when implementing new technologies. Retailers can overcome this resistance by involving stakeholders in the decision-making process, communicating the benefits of the software, and providing comprehensive training and support.
### Future Trends in Retail Audit Software
The future of retail audit software is likely to involve advancements in artificial intelligence, machine learning, and predictive analytics. These technologies will enable retailers to gain deeper insights into store performance and drive continuous improvement in compliance processes.
### Conclusion
In conclusion, retail audit software emerges as a pivotal tool for modern retailers, offering a streamlined approach to compliance and operational efficiency. By automating processes, providing real-time insights, and ensuring data accuracy, this software empowers retailers to navigate the complexities of regulatory requirements with ease.
Moreover, it fosters a proactive stance towards compliance, enabling retailers to address issues promptly and mitigate risks effectively. With the ability to standardize audit processes across multiple locations, retail audit software fosters consistency and reliability in assessing compliance standards.
As the retail landscape continues to evolve, the adoption of retail audit software becomes increasingly imperative for retailers striving to stay competitive and enhance customer satisfaction. By embracing this technology, retailers can not only meet compliance obligations but also unlock opportunities for growth and innovation.
In essence, retail audit software represents a transformative solution that not only simplifies compliance but also paves the way for a more agile and resilient retail industry.
| developer_tips | |
1,885,915 | Watercooler Wednesday | Hey folks! I figured I'd kick off a new weekly thread for folks to chat about... Whatever. New... | 0 | 2024-06-12T16:00:09 | https://dev.to/ben/watercooler-wednesday-5bel | watercooler | Hey folks!
I figured I'd kick off a new weekly thread for folks to chat about... Whatever.
New hobbies, interests, games, kids, parents, whatever.
Let's keep this chat light and positive and see if it can become a nice weekly check-in. | ben |
1,885,914 | Exploring Different API Architecture Styles: Sockets | Sockets provide a way for bidirectional real-time communication between a client and a server. They... | 0 | 2024-06-12T15:56:57 | https://dev.to/dylantv/exploring-different-api-architecture-styles-graphql-grpc-sockets-and-soap-50ho | Sockets provide a way for bidirectional real-time communication between a client and a server. They are widely used in chat applications, online games, and live data streaming. Here's an example of how to implement a simple chat server using sockets in Node.js:
javascript
```
const net = require('net');
const server = net.createServer(socket => {
console.log('Client connected');
socket.on('data', data => {
console.log('Message received:', data.toString());
socket.write('Message received');
});
socket.on('end', () => {
console.log('Client disconnected');
});
});
server.listen(3000, () => {
console.log('Chat server running on port 3000');
});
```
In this example, we create a socket server that listens on port 3000 and handles client connections. When a client sends a message, the server receives it and responds with a confirmation message.
Socket Applications:
- Real-time applications
- Push notifications
- Remote monitoring
| dylantv |
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